Crossrail is a completed railway project centred on London. It provides a high-frequency hybrid commuter rail and rapid transit system, akin to the
RER in Paris and the
S-Bahn
The S-Bahn ( , ), , is a hybrid urban rail, urban–suburban rail system serving a metropolitan region predominantly in German language, German-speaking countries. Some of the larger S-Bahn systems provide service similar to rapid transit syst ...
systems of German-speaking countries, known as the
Elizabeth line
The Elizabeth line is a railway line that runs across Greater London and nearby towns, operating similarly to the Réseau Express Régional, RER in Paris and the S-Bahn systems of German-speaking countries. It runs services on dedicated infras ...
, that crosses the capital from suburbs on the west to east and connects two major railway lines terminating in London: the
Great Western Main Line and the
Great Eastern Main Line. The project was approved in 2007, and construction began in 2009 on the central section and connections to existing lines that became part of the route, which has been named the Elizabeth line in honour of Queen
Elizabeth II
Elizabeth II (Elizabeth Alexandra Mary; 21 April 19268 September 2022) was Queen of the United Kingdom and other Commonwealth realms from 6 February 1952 until Death and state funeral of Elizabeth II, her death in 2022. ...
who opened the line on 17 May 2022 during
her Platinum Jubilee. The central section of the line between
Paddington
Paddington is an area in the City of Westminster, in central London, England. A medieval parish then a metropolitan borough of the County of London, it was integrated with Westminster and Greater London in 1965. Paddington station, designed b ...
and
Abbey Wood opened on 24 May 2022, with 12 trains per hour running in each direction through the core section in
Central London
Central London is the innermost part of London, in England, spanning the City of London and several boroughs. Over time, a number of definitions have been used to define the scope of Central London for statistics, urban planning and local gove ...
.
The main feature of the project was the construction of a new railway line that runs underground from
Paddington Station
Paddington, also known as London Paddington, is a London station group, London railway station and London Underground station complex, located on Praed Street in the Paddington area. The site has been the London terminus of services provided by ...
to a junction near Whitechapel. There it splits into a branch to , where it joins the
Great Eastern Main Line; and a branch to
Abbey Wood in southeast London.
When the Elizabeth line became fully operational in May 2023, the new nine-carriage
Class 345 trains started to run at frequencies in the central section of up to 24 trains per hour in each direction through the central core, after which services divide into two branches: in the west to and to ; in the east to and to . Local services on the section of the Great Eastern Main Line between and Shenfield had been transferred to
TfL Rail in May 2015; TfL Rail also took over
Heathrow Connect services in May 2018 and replaced some local services between Paddington and Reading in December 2019. The TfL Rail brand was discontinued when the core section of the Elizabeth line opened in May 2022.
The Elizabeth line is operated by
MTR Corporation (Crossrail) Ltd as a
London Rail concession of
Transport for London
Transport for London (TfL) is a local government body responsible for most of the transport network in London, United Kingdom.
TfL is the successor organization of the London Passenger Transport Board, which was established in 1933, and His ...
(TfL), in a similar manner to
London Overground
London Overground (also known simply as the Overground) is a Urban rail in the United Kingdom, suburban rail network serving London and its environs. Established in 2007 to take over Silverlink Metro routes, it now serves a large part of Greate ...
. TfL's annual revenues from the line were forecast in 2018 to be nearly £500million in 2022–23 and over £1billion from 2024 to 2025.
The total estimated cost rose from an initial budget of £14.8billion to £18.8billion by December 2020. Originally planned to open in 2018, the project was repeatedly delayed, including several months caused by the
COVID-19 pandemic
The COVID-19 pandemic (also known as the coronavirus pandemic and COVID pandemic), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), began with an disease outbreak, outbreak of COVID-19 in Wuhan, China, in December ...
.
History
Early proposals
The concept of large-diameter tunnels crossing central London to connect Paddington in the west and Liverpool Street in the east was first proposed by railwayman
George Dow in ''
The Star'' newspaper in June 1941. The project that became Crossrail has origins in the 1943
County of London Plan and 1944
Greater London Plan by
Patrick Abercrombie. These led to a specialist investigation by the Railway (London Plan) Committee, appointed in 1944 and reporting in 1946 and 1948.
The term "Crossrail" emerged in the 1974 London Rail Study Report. Although the idea was seen as imaginative, only a brief estimate of cost was given: £300million. A feasibility study was recommended as a high priority so that the practicability and costs of the scheme could be determined. It was also suggested that the alignment of the tunnels should be safeguarded while a final decision was taken.
Later proposals
The Central London Rail Study of 1989 proposed tunnels linking the existing rail network as the "East–West Crossrail", "City Crossrail", and "North–South Crossrail" schemes. The east–west scheme was for a line from Liverpool Street to Paddington/Marylebone with two connections at its western end linking the tunnel to the
Great Western Main Line and the
Metropolitan line on the Underground. The City route was shown as a new connection across the
City of London
The City of London, also known as ''the City'', is a Ceremonial counties of England, ceremonial county and Districts of England, local government district with City status in the United Kingdom, city status in England. It is the Old town, his ...
linking the
Great Northern Route with London Bridge.
The north–south line proposed routing
West Coast Main Line, Thameslink, and Great Northern trains through Euston and
King's Cross/, then under the
West End via , and
Victoria towards and . The report also recommended a number of other schemes including a "Thameslink Metro" route enhancement, and the Chelsea–Hackney line. The cost of the east–west scheme including rolling stock was estimated at £885million.
In 1991, a
private bill was submitted to Parliament for a scheme including a new underground line from Paddington to Liverpool Street. The bill was promoted by London Underground and British Rail, and supported by the government; it was rejected by the Private Bill Committee in 1994 on the grounds that a case had not been made, though the government issued "Safeguarding Directions", protecting the route from any development that would jeopardise future schemes.
In 2001, Cross London Rail Links (CLRL), a joint-venture between
TfL and the
Department for Transport (DfT), was formed to develop and promote the Crossrail scheme, and also a Wimbledon–Hackney scheme.
While CLRL was promoting the Crossrail project, alternative schemes were being proposed. In 2002, GB Railways put forward a scheme called SuperCrossRail which would link regional stations such as , , , , and via a west–east rail tunnel through central London. The tunnel would follow an alignment along the River Thames, with stations at , and . In 2004 another proposal named
Superlink was promoted by a group of senior railway managers. Like SuperCrossRail, Superlink envisaged linking a number of regional stations via a tunnel through London, but advocated the route already safeguarded for Crossrail. CLRL evaluated both proposals and rejected them due to concerns about network capacity and cost issues.
Approval
The
Crossrail Act 2008 was given royal assent in July 2008, giving CLRL the powers necessary to build the line. In September 2009, TfL was loaned £1billion towards the project by the
European Investment Bank
The European Investment Bank (EIB) is the European Union's investment bank and is owned by the 27 member states. It is the largest multilateral financial institution in the world. The EIB finances and invests both through equity and debt sol ...
.
Both
Conservative
Conservatism is a cultural, social, and political philosophy and ideology that seeks to promote and preserve traditional institutions, customs, and values. The central tenets of conservatism may vary in relation to the culture and civiliza ...
s and
Labour made commitments in their
2010 election manifestos to deliver Crossrail, and the coalition government following the election was committed to the project.
Construction
Chronology

In April 2009, Crossrail announced that 17 firms had secured 'Enabling Works Framework Agreements' and would now be able to compete for packages of works. At the peak of construction up to 14,000 people were expected to be needed in the project's supply chain.
Work began on 15 May 2009 when
piling works started at the future
Canary Wharf station.
The threat of diseases being released by work on the project was raised by
Lord James of Blackheath at the passing of the Crossrail Bill. He told the
House of Lords
The House of Lords is the upper house of the Parliament of the United Kingdom. Like the lower house, the House of Commons of the United Kingdom, House of Commons, it meets in the Palace of Westminster in London, England. One of the oldest ext ...
select committee that 682 victims of
anthrax had been brought into
Smithfield in
Farringdon with some contaminated meat in 1520 and then buried in the area. On 24 June 2009 it was reported that no traces of anthrax or
bubonic plague had been found on human bone fragments discovered during tunnelling.
Invitations to tender for the two principal tunnelling contracts were published in the
Official Journal of the European Union in August 2009. 'Tunnels West' (C300) was for twin tunnels from Royal Oak through to the new
Crossrail Farringdon Station, with a portal west of
Paddington
Paddington is an area in the City of Westminster, in central London, England. A medieval parish then a metropolitan borough of the County of London, it was integrated with Westminster and Greater London in 1965. Paddington station, designed b ...
. The 'Tunnels East' (C305) request was for three tunnel sections and 'launch chambers' in
east London. Contracts were awarded in late 2010: the 'Tunnels West' contract was awarded to
BAM Nuttall,
Ferrovial Agroman and
Kier Construction (BFK); the 'Tunnels East' contract was awarded to
Dragados and
John Sisk & Son. The remaining tunnelling contract (C310,
Plumstead to
North Woolwich), which included a tunnel under the
Thames
The River Thames ( ), known alternatively in parts as the River Isis, is a river that flows through southern England including London. At , it is the longest river entirely in England and the second-longest in the United Kingdom, after th ...
, was awarded to
Hochtief and
J. Murphy & Sons in 2011.
By September 2009, preparatory work for the £1billion developments at station had begun, with buildings (including the
Astoria Theatre) being
compulsorily purchased and demolished.

In March 2010, contracts were awarded to
civil engineering companies for the second round of 'enabling work' including 'Royal Oak Portal Taxi Facility Demolition', 'Demolition works for
Crossrail Bond Street Station', 'Demolition works for Crossrail Tottenham Court Road Station' and 'Pudding Mill Lane Portal'. In December 2010, contracts were awarded for most of the tunnelling work. To assist with the skills required for the Crossrail project, Crossrail opened in 2011 the Tunnelling and Underground Construction Academy in
Ilford
Ilford is a large List of areas of London, town in East London, England, northeast of Charing Cross. Part of the London Borough of Redbridge, Ilford is within the Ceremonial counties of England, ceremonial county of Greater London. It had a po ...
. The academy was handed over to TfL in 2017, who have
sub-contracted its management to
PROCAT.
In February 2010, Crossrail was accused of bullying residents whose property lay on the route into selling for less than the market value. A subsequent
London Assembly report was highly critical of the insensitive way in which Crossrail had dealt with compulsory purchases and the lack of assistance given to the people and businesses affected. There were also complaints from
music fans, as the London Astoria was forced to close.
In December 2011, a contract to ship the excavated material from the tunnel to
Wallasea Island was awarded to a joint venture comprising BAM Nuttall Limited and
Van Oord UK Limited. Between of soil would be used to construct a new
wetland nature reserve (
Wallasea Wetlands).
The project eventually moved of earth.
Restoration of
Connaught Tunnel by filling with concrete foam and reboring, as originally intended, was deemed too great a risk to the structural integrity of the tunnel, and so the docks above were drained to give access to the tunnel roof in order to enlarge its profile. This work took place during 2013.
Boring of the railway tunnels was officially completed at Farringdon on 4 June 2015 in the presence of the
Prime Minister
A prime minister or chief of cabinet is the head of the cabinet and the leader of the ministers in the executive branch of government, often in a parliamentary or semi-presidential system. A prime minister is not the head of state, but r ...
and the
Mayor of London
The mayor of London is the chief executive of the Greater London Authority. The role was created in 2000 after the Greater London devolution referendum in 1998, and was the first directly elected mayor in the United Kingdom.
The current ...
.
Installation of the track was completed in September 2017. The
ETCS signalling was scheduled to be tested in the Heathrow tunnels over the winter of 2017–2018.
The south east section of the infrastructure was energised in February 2018, with the first test train run between
Plumstead and
Abbey Wood that month. In May 2018 the overhead lines were powered up between
Westbourne Park and
Stepney
Stepney is an area in the London Borough of Tower Hamlets in the East End of London. Stepney is no longer officially defined, and is usually used to refer to a relatively small area. However, for much of its history the place name was applied to ...
, the installation of
platform doors was completed, and video was released of the first trains travelling through the tunnels.
TfL Rail took over
Heathrow Connect services from Paddington to
Heathrow in May 2018.

At the end of August 2018, four months before the scheduled opening of the core section of the line, it was announced that completion was delayed and that the line would not open before autumn 2019.
In April 2019, it was announced that Crossrail would be completed between October 2020 and March 2021, two years behind schedule, and that it would not include the opening of the Bond Street station, one of ten new stations on the line.
The London Assembly's transport committee concluded that TfL played down the prospect of delays to the project in updates to Mayor of London Sadiq Khan, and called for TfL commissioner
Mike Brown to consider his position. Crossrail said major challenges before completion included writing and testing the software that would integrate the train with three different track signalling systems, and installing equipment inside the tunnels.
In July 2019, it was announced that the line would not open in 2021, with TfL not expecting the full line from Heathrow to Shenfield to open until the early part of the 2023/24 financial year.
In August 2020, Crossrail announced that the central section would be ready to open "in the first half of 2022".
In May 2021, trial running commenced, with the core section opened by Queen
Elizabeth II
Elizabeth II (Elizabeth Alexandra Mary; 21 April 19268 September 2022) was Queen of the United Kingdom and other Commonwealth realms from 6 February 1952 until Death and state funeral of Elizabeth II, her death in 2022. ...
for passenger service on 24 May 2022.
Tunnel boring machines

The project used eight diameter
tunnel-boring machines (TBM) from
Herrenknecht AG (Germany). Two types are used; 'slurry' type for the Thames tunnel, which involves tunnelling through
chalk; and 'Earth Pressure Balance Machines' (EPBM) for tunnelling through clay, sand and gravel (at lower levels through
Lambeth Group
The Lambeth Group is a stratigraphic group, a set of geological rock strata in the London and Hampshire basins of southern England. It comprises a complex of vertically and laterally varying gravels, sands, silts and clays deposited between 56 ...
and
Thanet Sands ground formation). The TBMs weigh nearly 1,000tonnes and are over long.
[Sources:
*
*
* ] The main tunnelling contracts were valued at around £1.5billion.
Crossrail ran a competition in January 2012 to name the TBMs, in which over 2,500 entries were received and 10 pairs of names short-listed. After a public vote in February 2012, the first three pairs of names were announced on 13 March and the last pair on 16 August 2013:
* ''Ada'' and ''Phyllis'', Royal Oak to Farringdon section, named after
Ada Lovelace and
Phyllis Pearsall
* ''Victoria'' and ''Elizabeth'', Limmo Peninsula to Farringdon section, named after
Queen Victoria
Victoria (Alexandrina Victoria; 24 May 1819 – 22 January 1901) was Queen of the United Kingdom of Great Britain and Ireland from 20 June 1837 until Death and state funeral of Queen Victoria, her death in January 1901. Her reign of 63 year ...
and Queen Elizabeth II
* ''Mary'' and ''Sophia'', Plumstead to North Woolwich section, named after Mary and
Sophia, the wives respectively of
Isambard Kingdom Brunel
Isambard Kingdom Brunel ( ; 9 April 1806 – 15 September 1859) was an English civil engineer and mechanical engineer who is considered "one of the most ingenious and prolific figures in engineering history", "one of the 19th-century engi ...
and his father
Marc Isambard Brunel
Sir Marc Isambard Brunel (, ; 25 April 1769 – 12 December 1849) was a French-American engineer active in the United States and Britain, most famous for the civil engineering work he did in the latter. He is known for having overseen the pr ...
, builders of the first
tunnel under the Thames
* ''Jessica'' and ''Ellie'', Pudding Mill Lane to Stepney Green and Limmo Peninsula to Victoria Dock sections, named after
Jessica Ennis and
Ellie Simmonds
Health, safety, and industrial relations

In September 2012, a gantry supporting a spoil hopper, used to load rail wagons with excavated waste at a construction site near
Westbourne Park Underground station, collapsed. It tipped sideways, causing the adjacent Network Rail line to be closed.
On 7 March 2014, Rene Tkacik, a Slovakian construction worker, was killed by a piece of falling concrete while working in a tunnel. In April 2014, ''
The Observer
''The Observer'' is a British newspaper published on Sundays. First published in 1791, it is the world's oldest Sunday newspaper.
In 1993 it was acquired by Guardian Media Group Limited, and operated as a sister paper to ''The Guardian'' ...
'' reported details of a leaked internal report, compiled for the Crossrail contractors by an independent safety consultancy. The report was alleged to have pointed to poor industrial relations arising from safety concerns, and that workers were "too scared to report injuries for fear of being sacked".
Three construction workers died from suspected heart attacks over six months in 2019, but Crossrail announced that, following extensive testing, the air quality at Bond Street station was within acceptable limits.
Blacklisting

In 2012, Crossrail faced accusations of
blacklisting. It was revealed that an industrial relations manager, Ron Barron, employed by
Bechtel
Bechtel Corporation () is an American engineering, procurement, construction, and project management company founded in San Francisco, California in 1898, and headquartered in Reston, Virginia in the Washington metropolitan area. , the '' E ...
, had routinely cross-checked job applicants against the
Consulting Association database.
An employment tribunal in 2010 heard that Barron introduced the use of the blacklist at his former employer, the construction firm
Chicago Bridge & Iron Company (CB&I), and referred to it more than 900 times in 2007 alone. He was found to have unlawfully refused employment to a Philip Willis. Aggravated damages were awarded because Barron had added information about Willis to the blacklist.
In May 2012, a BFK manager challenged their subcontractor, Electrical Installations Services Ltd. (EIS), saying that one of their electricians was a trade union activist. Some days later, Pat Swift, the HR manager for BFK and a regular user of the
Consulting Association, again challenged EIS. EIS refused to dismiss their worker and lost the contract. Flash pickets were held at the Crossrail site and also at the sites of the BFK partners. The
Scottish Affairs Select Committee
The Scottish Affairs Select Committee is a Select committee (United Kingdom), select committee of the House of Commons of the United Kingdom, House of Commons in the Parliament of the United Kingdom. The remit of the committee is to examine the ...
called on the UK
Business Secretary,
Vince Cable, to set up a government investigation into blacklisting at Crossrail.
Further allegations of blacklisting against Crossrail were made in Parliament in September 2017.
In March 2023, a former Crossrail worker made a High Court statement regarding a damages claim against Crossrail, Skanska, Costain, T Clarke and NG Bailey for blacklisting. The case had been settled out of court in December 2021. Electrician Daniel Collins had raised health and safety concerns at the Bond Street station site in February 2015, was fired three days later, and faced repeated difficulties in gaining new employment on the project. He alleged there was a "secretive system of misuse of private information" about union activists. Crossrail and the contractors denied all Collins' allegations, saying they settled the court case "for purely commercial reasons" and "without admission of liability or wrongdoing". Collins received an undisclosed sum for damages and to cover court costs.
Archaeology
Much like the
Thames Tideway Scheme and the
High Speed 2
High Speed 2 (HS2) is a high-speed railway which has been under construction in England since 2019. The line's planned route is between Handsacre – in southern Staffordshire – and London, with a Spur line, branch to Birmingham. HS2 is to ...
projects, which were under development in London at the same time as Crossrail, the excavation works that took place during the project gave archaeologists a valuable opportunity to explore the earth underneath London's streets that was previously seen as inaccessible. Crossrail undertook what was described as one of the most extensive archaeological programmes ever seen in the UK. Over 100 archaeologists have found tens of thousands of items from 40 sites, spanning 55million years of London's history and prehistory. Many of the items were placed on show at the
Museum of London Docklands from February to September 2017.
Some of the most notable finds include:
* Victims of the
Great Plague, a mass grave of 42 skeletons found at
Liverpool Street station
* Thirteen skeletons, thought to be of victims of the
Black Death
The Black Death was a bubonic plague pandemic that occurred in Europe from 1346 to 1353. It was one of the list of epidemics, most fatal pandemics in human history; as many as people perished, perhaps 50% of Europe's 14th century population. ...
in the 14th century, uncovered under the road that surrounds the gardens in
Charterhouse Square,
Farringdon in March 2013
*
Prehistoric knapped flints discovered in North Woolwich
* A
Tudor period
In England and Wales, the Tudor period occurred between 1485 and 1603, including the Elizabethan era during the reign of Elizabeth I (1558–1603). The Tudor period coincides with the dynasty of the House of Tudor in England, which began with ...
bowling ball found in Stepney Green
*
Medieval
In the history of Europe, the Middle Ages or medieval period lasted approximately from the 5th to the late 15th centuries, similarly to the post-classical period of World history (field), global history. It began with the fall of the West ...
ice skates found near
Liverpool Street station
*
Bison
A bison (: bison) is a large bovine in the genus ''Bison'' (from Greek, meaning 'wild ox') within the tribe Bovini. Two extant taxon, extant and numerous extinction, extinct species are recognised.
Of the two surviving species, the American ...
and
reindeer bones
* Leather shoes dating from the
Tudor period
In England and Wales, the Tudor period occurred between 1485 and 1603, including the Elizabethan era during the reign of Elizabeth I (1558–1603). The Tudor period coincides with the dynasty of the House of Tudor in England, which began with ...
*
Roman coins and a
Roman medallion found at Liverpool Street which was issued to mark the New Year celebrations in AD 245. This medallion was only the second ever of its kind to be found in Europe.
* Two parts of a
woolly mammoth jawbone
* The largest piece of
amber
Amber is fossilized tree resin. Examples of it have been appreciated for its color and natural beauty since the Neolithic times, and worked as a gemstone since antiquity."Amber" (2004). In Maxine N. Lurie and Marc Mappen (eds.) ''Encyclopedia ...
ever found in the UK, discovered at Canary Wharf
* A
Victorian chamber pot found near Stepney Green
* 13,000
Crosse & Blackwell jars found near Tottenham Court Road from the late 19th and early 20th centuries.
* Part of a small barge or fishing vessel from 1223 to 1290 found at
Canning Town
Operational testing
In the first half of 2021, Crossrail entered trial running stage of construction. Crossrail, in partnership with TfL, ran trains to a timetable through the core section, to check the reliability of the railway. In November 2021, Crossrail entered trial operation which is the final stage before opening.
Expected completion
With an initial budget of £14.8billion, the total cost rose to £18.25billion by November 2019,
and increased further to £18.8billion by December 2020.
Delays to the project of several months were caused by the
COVID-19 pandemic in England, and in late 2020 this reduced the number of workers that could be safely on-site.
By August 2021, seven of the nine new stations had been handed over to TfL.
The Abbey Wood to Paddington section opened to passengers on 24 May 2022, although initially trains did not run on Sundays to allow for further testing, nor did they call at Bond Street, which opened on 24 October 2022. From Sunday 6 November trains began running directly from Reading and Heathrow in the west to Abbey Wood, and from Shenfield in the east through to Paddington as the surface railways connect with the central tunnels. TfL expects that the full line, with final timetable, will be operational by May 2023.
Route
In the west, the new tunnel connects with the
Great Western Main Line at
Royal Oak, west of . East of the line splits at an underground junction. The north-eastern branch emerges to join the existing
Great Eastern Main Line at . The south-eastern branch runs underground to
Abbey Wood via
Canary Wharf,
Custom House
A custom house or customs house was traditionally a building housing the offices for a jurisdictional government whose officials oversaw the functions associated with importing and exporting goods into and out of a country, such as collecting ...
and
Woolwich. This branch takes over a stretch of the former
North London line built by the
Eastern Counties and Thames Junction Railway, and connects it with the
North Kent Line via a tunnel under the Thames at
North Woolwich.
The tunnelled sections are altogether approximately in length.
There are new stations at
Paddington
Paddington is an area in the City of Westminster, in central London, England. A medieval parish then a metropolitan borough of the County of London, it was integrated with Westminster and Greater London in 1965. Paddington station, designed b ...
, , , , and
Whitechapel
Whitechapel () is an area in London, England, and is located in the London Borough of Tower Hamlets. It is in east London and part of the East End of London, East End. It is the location of Tower Hamlets Town Hall and therefore the borough tow ...
, with interchanges with London Underground and National Rail services. Due to the length and positioning of the new platforms, Farringdon station is also connected to station, and Liverpool Street to station.
Western end
From the western end of the tunnel Elizabeth line services continue to where they either remain on the Great Western Main Line and run to or via or split off to the Heathrow branch terminating at Heathrow Terminals
4 or
5. Existing stations were refurbished and upgraded, including the provision of step-free access at all stations, and platform lengthening at most to accommodate the new trains.
Earlier plans suggested terminating at Maidenhead, with an extension to Reading safeguarded.
Various commentators advocated an extension further west as far as Reading because it was seen as complementary to the
Great Western Electrification project which was announced in July 2009. A Reading terminus was also recommended by Network Rail's 2011
Route Utilisation Strategy.
[ Rail Utilisation Strategy, 2011, page 9] On 27 March 2014 it was announced that the line would indeed extend to Reading.
A flyover at Airport Junction near Hayes & Harlington station allows
Heathrow Express trains to pass over the track used by Crossrail, avoiding delays caused by crossings. The line between the junction and
Heathrow Central (mostly in a tunnel) is not owned by
Network Rail but by
Heathrow Airport Holdings
Heathrow Airport Holdings is a company that operates and manages Heathrow Airport based in London, England. It was formed by the privatisation of the British Airports Authority as BAA plc as part of Margaret Thatcher's privatisation of governmen ...
.
A "dive-under" was constructed at Acton to allow passenger trains to pass slower freight trains leaving and entering a goods yard. It was completed in July 2016 and was brought into use in 2017.
Eastern end
The north-eastern Crossrail tunnel connects with the
Great Eastern Main Line at . The Elizabeth line runs to via , and .
Design and infrastructure
Name and identity

''Crossrail'' is the name of the construction project and of the
limited company
In a limited company, the Legal liability, liability of members or subscribers of the company is limited to what they have invested or guaranteed to the company. Limited companies may be limited by Share (finance), shares or by guarantee. In a c ...
, wholly owned by TfL, that was formed to carry out construction works.
The ''Elizabeth line'' is the name of the new service that will be seen on signage throughout the stations. It is named in honour of Queen
Elizabeth II
Elizabeth II (Elizabeth Alexandra Mary; 21 April 19268 September 2022) was Queen of the United Kingdom and other Commonwealth realms from 6 February 1952 until Death and state funeral of Elizabeth II, her death in 2022. ...
.
The Elizabeth line logo features a
Transport for London roundel with a purple ring and TfL-blue bar with white text. ''
TfL Rail'' was an intermediate brand name which was introduced in May 2015 and discontinued in May 2022. It was used by TfL on services between Paddington and Heathrow Terminal 5 and Reading, as well as trains between Liverpool Street and Shenfield.
Tunnels
of twin-bore tunnels were constructed by
tunnel boring machines (TBM), each with an internal diameter of
(compared with for the deep-level
Victoria line). The wide-diameter tunnels allow for new rolling stock, which is larger than the traditional deep-level tube trains. The tunnels allow for the emergency evacuation of passengers through the side doors rather than along the length of the train.
The tunnels are made up of three main sections: a tunnel from Royal Oak portal near
Royal Oak station to Victoria Dock portal near
Custom House
A custom house or customs house was traditionally a building housing the offices for a jurisdictional government whose officials oversaw the functions associated with importing and exporting goods into and out of a country, such as collecting ...
station, a tunnel from portal connecting to the longer tunnel at an underground junction at
Stepney Green cavern, and a separate tunnel from
Plumstead to
North Woolwich underneath the
Thames
The River Thames ( ), known alternatively in parts as the River Isis, is a river that flows through southern England including London. At , it is the longest river entirely in England and the second-longest in the United Kingdom, after th ...
. The Custom House to North Woolwich section, included a £50million investment to renovate and reuse the
Connaught tunnel.
Crossrail has often been compared to Paris's
RER system due to the length of the central tunnel.
Stations

The majority of stations in the central section all have distinctive architecture at street level; whereas stations at platform level have identical "
kit-of-parts" architecture, including full height
platform screen doors with integrated
passenger information displays. This is a different approach from the
Jubilee Line Extension in the 1990s, where each station was designed by a different architect. Artwork was also installed at seven of the stations in the central section.
A mock-up of the new stations was built in Bedfordshire in 2011 to ensure that their architectural integrity would last for a century.
It was planned to bring at least one mock-up to London for the public to view the design and give feedback before final construction commenced.
81 escalators were installed at the nine new stations.
At in length, the escalators at Bond Street are just one metre shorter than the escalators at
Angel
An angel is a spiritual (without a physical body), heavenly, or supernatural being, usually humanoid with bird-like wings, often depicted as a messenger or intermediary between God (the transcendent) and humanity (the profane) in variou ...
, the longest escalator on the Underground.
All stations in the central section were built to be step free from street to train, with 54 lifts installed in the nine new stations.
Existing stations on the Great Western Main Line and Great Eastern Main Line were upgraded and refurbished, with some stations receiving new entrance buildings.
All surface level stations have lifts, allowing step free access from street to platform.
Electrification and signalling
Crossrail uses
25kV, 50Hz AC overhead lines
An overhead line or overhead wire is an electrical cable that is used to transmit electrical energy to electric locomotives, Electric multiple unit, electric multiple units, trolleybuses or trams. The generic term used by the International Union ...
, which are also used on the
Great Eastern and
Great Western Main Lines.
The Heathrow branch started using the
European Train Control System (ETCS) in 2020. The
Automatic Warning (AWS) and
Train Protection & Warning (TPWS) systems are used on the Great Western and Great Eastern Main Lines, with possible later upgrades to ETCS.
Communications-based train control (CBTC) is installed in the central section and the Abbey Wood branch.
Depots
Crossrail will have depots in west London at
Old Oak Common TMD, in south-east London at Plumstead Depot, and in east London at
Ilford EMU Depot and at a new signalling centre at in
Havering,
East London.
Further proposals
Additional stations
Silvertown (London City Airport)
Although the Crossrail route passes very close to
London City Airport
London City Airport is an international airport in London, England. It is located in the Royal Docks in the London Borough of Newham, Borough of Newham, about east of the City of London and east of Canary Wharf. These are the two centres ...
, there is no station serving the airport directly. London City Airport had proposed the re-opening of
Silvertown railway station, in order to create an interchange between the rail line and the airport. The self-funded £50million station plan was supported 'in principle' by the
London Borough of Newham. Provisions for re-opening of the station were made in 2012 by Crossrail. However, it was alleged by the airport that TfL was hostile to the idea of a station on the site, a claim disputed by TfL.
In 2018, the airport's
chief development officer described the lack of a Crossrail station as a "missed opportunity", but did not rule out a future station for the airport. The CEO stated in an interview that a station is not essential to the airport's success. In May 2019, the chief development officer confirmed discussions are ongoing about a station for the airport as part of the proposed extension to Ebbsfleet.
Old Oak Common
As part of the
High Speed 2
High Speed 2 (HS2) is a high-speed railway which has been under construction in England since 2019. The line's planned route is between Handsacre – in southern Staffordshire – and London, with a Spur line, branch to Birmingham. HS2 is to ...
(HS2) rail link from London to
Birmingham
Birmingham ( ) is a City status in the United Kingdom, city and metropolitan borough in the metropolitan county of West Midlands (county), West Midlands, within the wider West Midlands (region), West Midlands region, in England. It is the Lis ...
, a new station is being built at between
Paddington
Paddington is an area in the City of Westminster, in central London, England. A medieval parish then a metropolitan borough of the County of London, it was integrated with Westminster and Greater London in 1965. Paddington station, designed b ...
and
Acton Main Line station. The new station will connect HS2 services with Crossrail and National Rail services on the
Great Western Main Line, as well as
London Overground
London Overground (also known simply as the Overground) is a Urban rail in the United Kingdom, suburban rail network serving London and its environs. Established in 2007 to take over Silverlink Metro routes, it now serves a large part of Greate ...
services running through the area. The original plan was that the station would open with High Speed 2 in 2026, with preliminary construction beginning in 2019.
Go-ahead for construction was given in June 2021.
Extensions
To Ebbsfleet and Gravesend
In the 2003 and 2004 consultations into Crossrail, the South East branch was proposed to go beyond
Abbey Wood, running along the
North Kent Line to
Ebbsfleet, linking up with the (then under construction)
Channel Tunnel Rail Link. However, prior to the submission of the Crossrail Hybrid Bill to Parliament in 2005, the branch was truncated at
Abbey Wood to cut overall project costs.
Although dropped from the main scheme, the route was safeguarded by the DfT as far as
Gravesend and
Hoo Junction, protecting the route from development.
With the Crossrail project nearing completion in 2018, local MPs, council leaders and local businesses began lobbying the government to fund the development of a business case for the extension to Ebbsfleet, with the Mayor of London,
Sadiq Khan
Sir Sadiq Aman Khan (, ; born 8 October 1970) is a British politician serving as Mayor of London since 2016. He was previously Member of Parliament (United Kingdom), Member of Parliament (MP) for Tooting (UK Parliament constituency), Tooting ...
including the project in his Mayor's Transport Strategy. The Mayor's Transport Strategy estimated that an extension could assist in delivering 55,000 new homes and 50,000 new jobs planned along the route in
Bexley and north Kent. In March 2019, the Government committed £4.8million on exploratory work into the extension as part of the
Thames Estuary
The Thames Estuary is where the River Thames meets the waters of the North Sea, in the south-east of Great Britain.
Limits
An estuary can be defined according to different criteria (e.g. tidal, geographical, navigational or in terms of salinit ...
2050 Growth Commission.
The following stations are on the protected route extension to Gravesend: , , , , , for
Bluewater, ,
Ebbsfleet, , and .
To the West Coast Main Line
Network Rail's July 2011 London & South East
Route Utilisation Strategy (RUS) recommended that a short railway line could be built to connect the
West Coast Main Line (WCML) with the Crossrail route. This would enable train services that currently run between and
London Euston to be re-routed via Old Oak Common to serve central London, and . The report argued that this would free up capacity at Euston for the planned
High Speed 2
High Speed 2 (HS2) is a high-speed railway which has been under construction in England since 2019. The line's planned route is between Handsacre – in southern Staffordshire – and London, with a Spur line, branch to Birmingham. HS2 is to ...
, reduce London Underground congestion at Euston, make better use of Crossrail's capacity west of Paddington, and improve access to Heathrow Airport from the north.
[ Rail Utilisation Strategy, 2011, page 150.] Under this scheme, all Crossrail trains would continue west of Paddington, instead of some of them terminating there. They would serve Heathrow Airport (10 tph), stations to Maidenhead and Reading (6 tph), and stations to Milton Keynes Central (8 tph).
In August 2014, a statement by transport secretary
Patrick McLoughlin indicated that the government was actively evaluating the extension of Crossrail as far as and , with potential Crossrail stops at , , , , , , , , , , and . The extension would relieve some pressure from London Underground and London Euston station while also increasing connectivity. Conditions to the extension were that any extra services should not affect the planned service pattern for confirmed routes, as well as affordability.
This proposal was shelved in August 2016 due to "poor overall value for money to the taxpayer".
To Staines
As part of the
Heathrow Southern Railway scheme proposed in 2017, the western extent of the Crossrail route could be extended beyond Heathrow Airport to terminate at . This extension would form part of a wider scheme to create new rail links in west London and Surrey serving Heathrow, and would require the construction of an extra platform at Staines station. This proposal has not been approved or funded.
To Southend Airport
Stobart Aviation, the company that previously operated
Southend Airport in Essex, proposed that Crossrail should be extended beyond Shenfield along the
Shenfield–Southend line to serve Southend Airport and . The company has suggested that a direct Heathrow-Southend link could alleviate capacity problems at Heathrow. The extension proposal has been supported by
Southend-on-Sea City Council.
Management and franchise
Funding for the project came from:
* TfL
* Mayoral
Community Infrastructure Levy (a local tax charged on property developments across Greater London, with different charging rates for each London borough)
* Crossrail Business Rate Supplement (additional business rates)
*
Section 106 Agreement payments
* Over-site development opportunities
* UK Government
*
City of London Corporation
* Major landowners:
Canary Wharf Group,
Heathrow Airport Holdings
Heathrow Airport Holdings is a company that operates and manages Heathrow Airport based in London, England. It was formed by the privatisation of the British Airports Authority as BAA plc as part of Margaret Thatcher's privatisation of governmen ...
, and
Berkeley Homes.
Crossrail was built by Crossrail Ltd, jointly owned by TfL and the DfT until December 2008, when full ownership was transferred to TfL. In 2007, Crossrail had a £15.9billion funding package in place for the construction of the line. Although the branch lines to the west and to Shenfield will still be owned by
Network Rail, the tunnel will be owned and operated by TfL.
On 18 July 2014, TfL
London Rail said that
MTR Corp had won the concession to operate the services for eight years, with an option for two more years.
The concession will be similar to London Overground. It is planned for
the franchise to run for eight years from May 2015,
taking over control of Shenfield metro services from
Abellio Greater Anglia in May 2015,
and Reading / Heathrow services from
Great Western Railway
The Great Western Railway (GWR) was a History of rail transport in Great Britain, British railway company that linked London with the southwest, west and West Midlands (region), West Midlands of England and most of Wales. It was founded in 1833, ...
in 2018.
In anticipation of a May 2015 transfer of Shenfield to Liverpool Street services from the
East Anglia franchise to Crossrail, the invitation to tender for the 2012–2013 franchise required the new rail operator to set up a separate "Crossrail business unit" for those services before the end of 2012, to allow transfer of services to the new Crossrail Train Operating Concession (CTOC) operator during the next franchise.
The infrastructure of the core section is managed by
Rail for London Infrastructure (RfLI), a subsidiary of TfL. Signalling is controlled by Network Rail's Romford
Rail Operating Centre.
See also
*
Crossrail 2 – second proposed Crossrail route providing a new north–south rail link across
Greater London
Greater London is an administrative area in England, coterminous with the London region, containing most of the continuous urban area of London. It contains 33 local government districts: the 32 London boroughs, which form a Ceremonial count ...
.
* ''
The Fifteen Billion Pound Railway'' – a documentary about the Elizabeth line's construction and commissioning
*
Transport in London
References
Citations
General and cited sources
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External links
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London Rail
Rail infrastructure in London
Railway operators in London
Underground commuter rail