The Ministry of Defence Main Building or MOD Main Building, also known as MOD Whitehall or originally as the Whitehall Gardens Building, is a
grade I listed
In the United Kingdom, a listed building is a structure of particular architectural or historic interest deserving of special protection. Such buildings are placed on one of the four statutory lists maintained by Historic England in England, Hi ...
government office building located on
Whitehall
Whitehall is a road and area in the City of Westminster, Central London, England. The road forms the first part of the A roads in Zone 3 of the Great Britain numbering scheme, A3212 road from Trafalgar Square to Chelsea, London, Chelsea. It ...
in
London
London is the Capital city, capital and List of urban areas in the United Kingdom, largest city of both England and the United Kingdom, with a population of in . London metropolitan area, Its wider metropolitan area is the largest in Wester ...
. The building was designed by
E. Vincent Harris in 1915 and constructed between 1939 and 1959 on part of the site of the
Palace of Whitehall
The Palace of Whitehall – also spelled White Hall – at Westminster was the main residence of the English monarchs from 1530 until 1698, when most of its structures, with the notable exception of Inigo Jones's Banqueting House of 1622, ...
, specifically Pelham House, Cromwell House,
Montagu House,
Pembroke House and part of
Whitehall Gardens. It was initially occupied by the
Air Ministry
The Air Ministry was a department of the Government of the United Kingdom with the responsibility of managing the affairs of the Royal Air Force and civil aviation that existed from 1918 to 1964. It was under the political authority of the ...
and the
Board of Trade
The Board of Trade is a British government body concerned with commerce and industry, currently within the Department for Business and Trade. Its full title is The Lords of the Committee of the Privy Council appointed for the consideration of ...
before becoming the current home of the
Ministry of Defence
A ministry of defence or defense (see American and British English spelling differences#-ce.2C -se, spelling differences), also known as a department of defence or defense, is the part of a government responsible for matters of defence and Mi ...
in 1964.
By the 1990s the building was no longer considered fit for purpose and had become expensive to maintain. A major refurbishment was therefore undertaken between 2000 and 2004 through a
private finance initiative
The private finance initiative (PFI) was a United Kingdom government procurement policy aimed at creating "public–private partnerships" (PPPs) where private firms are contracted to complete and manage public projects. Initially launched in 1992 ...
contract.
Location

Comprising a site of , the building is located on
Whitehall
Whitehall is a road and area in the City of Westminster, Central London, England. The road forms the first part of the A roads in Zone 3 of the Great Britain numbering scheme, A3212 road from Trafalgar Square to Chelsea, London, Chelsea. It ...
within the
City of Westminster
The City of Westminster is a London borough with City status in the United Kingdom, city status in Greater London, England. It is the site of the United Kingdom's Houses of Parliament and much of the British government. It contains a large par ...
, central
London
London is the Capital city, capital and List of urban areas in the United Kingdom, largest city of both England and the United Kingdom, with a population of in . London metropolitan area, Its wider metropolitan area is the largest in Wester ...
. Whitehall is lined with numerous government departments and offices and is close to the
Houses of Parliament
The Palace of Westminster is the meeting place of the Parliament of the United Kingdom and is located in London, England. It is commonly called the Houses of Parliament after the House of Commons and the House of Lords, the two legislative ch ...
. Whitehall is located to the west. Between Whitehall and Main Building is
Banqueting House
The Banqueting House, on Whitehall in the City of Westminster, central London, is the grandest and best-known survivor of the architectural genre of banqueting houses, constructed for elaborate entertaining. It is the only large surviving comp ...
which is the only remaining component of the
Palace of Whitehall
The Palace of Whitehall – also spelled White Hall – at Westminster was the main residence of the English monarchs from 1530 until 1698, when most of its structures, with the notable exception of Inigo Jones's Banqueting House of 1622, ...
to survive intact. To the north is
Horse Guards Avenue. The street is home to
Whitehall Court
Whitehall Court in the City of Westminster, England, is one contiguous building but consists of two separate constructions. The south end was designed by Thomas Archer and A. Green and constructed as a block of luxury residential apartments in ...
and also the
Old War Office building, former government offices which have been converted into mixed use development including a hotel, restaurants and apartments. The building is separated from
Victoria Embankment
Victoria Embankment is part of the Thames Embankment (the other section is the Chelsea Embankment), a road and river-walk along the north bank of the River Thames in London, England. Built in the 1860s, it runs from the Palace of Westminster to ...
and the
River Thames
The River Thames ( ), known alternatively in parts as the The Isis, River Isis, is a river that flows through southern England including London. At , it is the longest river entirely in England and the Longest rivers of the United Kingdom, s ...
to the east by public gardens known as Whitehall Gardens. Richmond Terrace is to the south and is now used as a private car park, although a public pedestrian route is maintained. Adjacent to Richmond Terrace is the
Curtis Green Building
New Scotland Yard, formerly known as the Curtis Green Building and before that, Whitehall Police Station, is a building in Westminster in Central London. Since November 2016, it has been the Scotland Yard headquarters of the Metropolitan Police ...
, the headquarters of the
Metropolitan Police Service since November 2016 and otherwise known as
New Scotland Yard
Scotland Yard (officially New Scotland Yard) is the headquarters of the Metropolitan Police, the territorial police force responsible for policing Greater London's London boroughs, 32 boroughs. Its name derives from the location of the original ...
. The
Department of Health
A health department or health ministry is a part of government which focuses on issues related to the general health of the citizenry. Subnational entities, such as states, counties and cities, often also operate a health department of their o ...
occupies the neighbouring building,
Richmond House
Richmond House is a government building in Whitehall, City of Westminster, London. Its name comes from an historic townhouse of the Duke of Richmond that once stood on the site.
History Stewart Dukes of Richmond
Richmond House was first built ...
.
The building is located within the Whitehall
Conservation Area
Protected areas or conservation areas are locations which receive protection because of their recognized natural or cultural values. Protected areas are those areas in which human presence or the exploitation of natural resources (e.g. firewoo ...
, and was identified by
Westminster City Council
Westminster City Council is the local authority for the City of Westminster in Greater London, England. It is a London borough council, one of 32 in London. The council has been under Labour majority control since 2022. Full council meetings ...
as a landmark building within their 2003 audit of the conservation area.
Queen Mary's Steps, once part of the
Palace of Whitehall
The Palace of Whitehall – also spelled White Hall – at Westminster was the main residence of the English monarchs from 1530 until 1698, when most of its structures, with the notable exception of Inigo Jones's Banqueting House of 1622, ...
, are near the north east corner of the building. They indicate the position of the river before the
Thames Embankment
The Thames Embankment was built as part of the London Main Drainage (1859-1875) by the Metropolitan Board of Works, a pioneering Victorian civil engineering project which housed intercept sewers, roads and underground railways and embanked the ...
was built.
Early history
Previous use of site
The building is located on the site of the Palace of Whitehall, which was the main residence of the
English monarchs
A monarch () is a head of stateWebster's II New College Dictionary. "Monarch". Houghton Mifflin. Boston. 2001. p. 707. for life or until abdication, and therefore the head of state of a monarchy. A monarch may exercise the highest authority an ...
in London from 1530 until 1698 when most of its structures were destroyed by a fire. Despite some rebuilding, financial constraints prevented large scale reconstruction. In the second half of the 18th century, much of the site was leased for the construction of town houses. By the early 19th century some of the
Georgian town houses were occupied as government offices.
Design and construction
In 1909, a decision was taken to construct a new significant government building on the
Whitehall Gardens site, primarily to be used by the
Board of Trade
The Board of Trade is a British government body concerned with commerce and industry, currently within the Department for Business and Trade. Its full title is The Lords of the Committee of the Privy Council appointed for the consideration of ...
. Architect
E. Vincent Harris won a national competition in 1915 to design the building. The selected site was proposed to extend over Whitehall Gardens and ground adjacent to
Victoria Embankment
Victoria Embankment is part of the Thames Embankment (the other section is the Chelsea Embankment), a road and river-walk along the north bank of the River Thames in London, England. Built in the 1860s, it runs from the Palace of Westminster to ...
. Opposition to this idea however led to the southern building-line extending no further than that of the neighbouring
Whitehall Court
Whitehall Court in the City of Westminster, England, is one contiguous building but consists of two separate constructions. The south end was designed by Thomas Archer and A. Green and constructed as a block of luxury residential apartments in ...
and
National Liberal Club buildings to the north. This resulted in a reduction of proposed floor space of approximately . Due to the outbreak of the
First World War
World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...
the start of work was delayed.
The
Office of Works
The Office of Works was an organisation responsible for structures and exterior spaces, first established as part of the English royal household in 1378 to oversee the building and maintenance of the royal castles and residences.
In 1832 it be ...
issued a requirement in 1933 for a significantly larger building and Harris was again selected as architect. The building was to comprise a single block in the
Neoclassical design, faced in
Portland stone
Portland stone is a limestone geological formation (formally named the Portland Stone Formation) dating to the Tithonian age of the Late Jurassic that is quarried on the Isle of Portland in Dorset, England. The quarries are cut in beds of whi ...
, some high and long, with a depth of , widening to feet. It was to be formed as four internal blocks of ten storeys surrounding three internal courtyards with the two main elevations facing Whitehall and the Victoria Embankment.
Work was again delayed due to the
interwar economic depression. However, activity started on site in 1938 when town houses in Whitehall Gardens were demolished. Five rooms from
Pembroke House, Cromwell House and Cadogan House were dismantled and incorporated into the building as conference rooms. The rooms are now known as the "Historic Rooms" and are located on the third and fourth floors (see
Historic Rooms section).
Due to the wishes of
Queen Mary and after providing assurances to Parliament, arrangements were made for the preservation of a 16th-century
Tudor brick-vaulted wine cellar which had originally been located in Cadogan House, the York Place home of
Cardinal Wolsey
Thomas Wolsey ( ; – 29 November 1530) was an English statesman and Catholic cardinal. When Henry VIII became King of England in 1509, Wolsey became the king's almoner. Wolsey's affairs prospered and by 1514 he had become the controlling f ...
. The long and wide cellar consists of 10 bays with 4 octagonal piers and had been incorporated into Whitehall Palace by
Henry VIII
Henry VIII (28 June 149128 January 1547) was King of England from 22 April 1509 until his death in 1547. Henry is known for his Wives of Henry VIII, six marriages and his efforts to have his first marriage (to Catherine of Aragon) annulled. ...
. The cellar was similar in design and construction to the wine cellar at
Hampton Court Palace
Hampton Court Palace is a Listed building, Grade I listed royal palace in the London Borough of Richmond upon Thames, southwest and upstream of central London on the River Thames. Opened to the public, the palace is managed by Historic Royal ...
, featuring brick with stone dressings. Prior to the redevelopment of the site it had been used as a luncheon room by the
Ministry of Transport
A ministry of transport or transportation is a ministry responsible for transportation within a country. It usually is administered by the ''minister for transport''. The term is also sometimes applied to the departments or other government a ...
. The existing position of the cellar was not compatible with the plans for the new building so it was decided to move it so it could be incorporated into the basement.
Construction progress on the building was short-lived as work largely stopped in 1939 at the outbreak of the
Second World War
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
. Work recommenced at the end of hostilities and in 1949 the wine cellar was encased by the contractor,
Trollope & Colls
Trollope & Colls was a British construction company. In the latter decades of the 20th century, it was one of the nation's largest construction companies.
The firm was created in 1903 from the merger of ''George Trollope & Sons'' and ''Colls & So ...
, in protective layers of concrete, steel and brick and placed on mahogany cushions, carriage rails and steel rollers. It was then moved to one side onto a specially designed steel frame so that a hole could be created on its original site. The 1,000 ton structure was lowered on
screwjacks, and then moved back to its final position.
Opening and operational use

In 1951, the northern end of the building was ready for occupation by the
Board of Trade
The Board of Trade is a British government body concerned with commerce and industry, currently within the Department for Business and Trade. Its full title is The Lords of the Committee of the Privy Council appointed for the consideration of ...
. The
Air Ministry
The Air Ministry was a department of the Government of the United Kingdom with the responsibility of managing the affairs of the Royal Air Force and civil aviation that existed from 1918 to 1964. It was under the political authority of the ...
took occupation of the southern part of the building when it was completed in 1959.
The Whitehall Gardens Building, as it was known when it opened, was Harris' last major work and the last significant neoclassical style government building. The September 1951 edition of ''
Building
A building or edifice is an enclosed Structure#Load-bearing, structure with a roof, walls and window, windows, usually standing permanently in one place, such as a house or factory. Buildings come in a variety of sizes, shapes, and functions, a ...
'' magazine praised the new building; however, it became known as the 'Whitehall Monster' and was described by architectural historian
Nikolaus Pevsner
Sir Nikolaus Bernhard Leon Pevsner (30 January 1902 – 18 August 1983) was a German-British art historian and architectural historian best known for his monumental 46-volume series of county-by-county guides, ''The Buildings of England'' (195 ...
as a 'monument of tiredness'.
In 1964, the former incarnation of the
Ministry of Defence
A ministry of defence or defense (see American and British English spelling differences#-ce.2C -se, spelling differences), also known as a department of defence or defense, is the part of a government responsible for matters of defence and Mi ...
, the
Admiralty, the
War Office
The War Office has referred to several British government organisations throughout history, all relating to the army. It was a department of the British Government responsible for the administration of the British Army between 1857 and 1964, at ...
and the Air Ministry, were combined to form the modern
Ministry of Defence
A ministry of defence or defense (see American and British English spelling differences#-ce.2C -se, spelling differences), also known as a department of defence or defense, is the part of a government responsible for matters of defence and Mi ...
. This generated a requirement for a single large building to accommodate staff for the new ministry and the Whitehall Gardens Building was identified as the preferred option, with the Board of Trade moving to the
Victoria area of London.
On 14 January 1970, the building was
grade I listed
In the United Kingdom, a listed building is a structure of particular architectural or historic interest deserving of special protection. Such buildings are placed on one of the four statutory lists maintained by Historic England in England, Hi ...
by
English Heritage
English Heritage (officially the English Heritage Trust) is a charity that manages over 400 historic monuments, buildings and places. These include prehistoric sites, a battlefield, medieval castles, Roman forts, historic industrial sites, Lis ...
as a building of exceptional interest.
Redevelopment
Contract
In the early 1990s, the MOD recognised that the condition of Main Building was no longer fit for modern business requirements. Maintenance had become expensive and inefficient and the building no longer met modern safety standards. At the same time, the MOD was seeking to reduce the number of staff it had within London so that it could make savings by consolidating its built estate. The decision was therefore made to redevelop Main Building and a 30-year long
private finance initiative
The private finance initiative (PFI) was a United Kingdom government procurement policy aimed at creating "public–private partnerships" (PPPs) where private firms are contracted to complete and manage public projects. Initially launched in 1992 ...
(PFI) contract for the redevelopment and ongoing maintenance & facilities management of the building was awarded in May 2000. The contract also included the refurbishment, maintenance and running of three central London MOD offices (Northumberland House,
Metropole Building and St Giles' Court) to temporarily accommodate staff decanted from Main Building during the redevelopment.
The capital expenditure involved was £531 million.
The contract winner, Modus, was a consortium consisting of
Innisfree PFI Funds (40.1% shareholding), Laing Investments (40.1%) and
Amey Ventures (19.9%). American firm
HOK was selected as architecture and interior design consultant, Alan Baxter as structural engineers and
WSP as mechanical & electrical engineers.
Kværner Construction were the main construction contractor; however, in August 2000 Kværner was bought over by Swedish multinational
Skanska.
Construction
The decant of staff to other buildings was completed in August 2001. In September of that year a ceremony took place to mark the commencement of works when Skanska's CEO Keith Clarke and
Chief of Defence Staff Admiral Sir Michael Boyce assisted
Secretary of State for Defence
The secretary of state for defence, also known as the defence secretary, is a secretary of state in the Government of the United Kingdom, with responsibility for the Ministry of Defence. As a senior minister, the incumbent is a member of the ...
Geoff Hoon
Geoffrey William Hoon (born 6 December 1953) is a British Labour Party politician who served as the Member of Parliament (MP) for Ashfield in Nottinghamshire from 1992 to 2010. He is a former Defence Secretary, Transport Secretary, Leader ...
to demolish a wall of his old office.

The redevelopment saw the existing cellular room layout changed into an open-plan office layout to improve collaboration between staff and the working environment. All mechanical and electrical services were upgraded along with IT networks. New communal spaces were created including a library, restaurant, coffee shop, business & press suite and nursery. The internal courtyards were enclosed to create three new
atria
Atria may refer to:
Science
*Atrium (heart) (plural: atria), an anatomical structure of the heart
*Atria (genus), a flatworm genus in the family Dendrocoelidae
* Atria (star) or Alpha Trianguli Australis, a star in the constellation Triangulum Aus ...
within the building. Security and
anti-terrorism
Counterterrorism (alternatively spelled: counter-terrorism), also known as anti-terrorism, relates to the practices, military tactics, techniques, and strategies that governments, law enforcement, businesses, and intelligence agencies use to co ...
measures were integrated into the building, with the MOD changing such requirements after the
9/11 terrorist attacks. Original historic features of the building were protected and restored during the redevelopment, such as the replacement of oak doors and
terrazzo marble floor of the Pillared Hall.
All 2,494 metal windows in the building were refurbished and repaired.
The capacity of the building was increased from 2,800 to 3,300 staff. This allowed the MOD to dispose of five buildings in central London, these being Northumberland House, the Metropole Building,
Great Scotland Yard
Great Scotland Yard is a street in Westminster, London, connecting Northumberland Avenue and Whitehall. By the 16th century, this "yard", which was then a series of open courtyards within the Palace of Whitehall, was fronted by buildings used ...
, St. Giles Court and St Christopher House.
The building was handed back to the MOD in July 2004 and re-occupation by 3,150 staff was completed in September 2004, two months ahead of schedule.
Controversy
The MOD were accused of excessive spending on the redevelopment project. Specific allegations included the cost of
Herman Miller Aeron office chairs which had a retail price of £1,050 each, lavish spending on the refurbishment of historic features and the provision of staff facilities including the coffee shop, restaurant and quiet rooms. In response, the MOD said that chairs were purchased at a large discount (approximately a third of the normal price); many of the aspects of the refurbishment relating to historic features were required by
English Heritage
English Heritage (officially the English Heritage Trust) is a charity that manages over 400 historic monuments, buildings and places. These include prehistoric sites, a battlefield, medieval castles, Roman forts, historic industrial sites, Lis ...
, reflecting the building's grade I listed status; and that staff facilities were generally not subsidised, were required to ensure an acceptable level of staff welfare and to provide a suitable working environment.

In April 2002, whilst redevelopment was still under way, the
National Audit Office (NAO) considered the extent to which the PFI contract was likely to deliver
value for money
In economics, economic value is a measure of the benefit provided by a good or service to an economic agent, and value for money represents an assessment of whether financial or other resources are being used effectively in order to secure such ...
and the effectiveness of MOD's management of the project. The NAO report was generally favourable and found that the contract would provide what the MOD wished to procure, that the benefits of the contract would be similar in cost to that estimated for conventional procurement (other factors had tipped the balance in favour of PFI) and that the management of the project had been good.
A subsequent report by the
House of Commons
The House of Commons is the name for the elected lower house of the Bicameralism, bicameral parliaments of the United Kingdom and Canada. In both of these countries, the Commons holds much more legislative power than the nominally upper house of ...
Public Accounts Committee
A public accounts committee (PAC) is a committee within a legislature whose role is to study public audits, invite ministers, permanent secretaries or other ministry officials to the committee for questioning, and report on their findings subseque ...
in January 2003 was less favourable. The committee was critical of the MOD's choice of PFI over other forms of procurement and considered that there was no guarantee that the contract, valued at £2.4 billion over its lifetime, will deliver value for money. The report also criticised the MOD for delays in concluding the final contract which resulted in increased costs and for poor forward planning, which resulted a separate deal being required to accommodate 500 additional staff in London.
Architectural features
Architectural sculpture

The northern
tetrastyle portico entrance to the building, on
Horse Guards Avenue, is flanked by two large statues, ''Earth'' and ''Water'', by the sculptor
Sir Charles Wheeler
Sir Selwyn Charles Cornelius-Wheeler (26 March 1923 – 4 July 2008) was a British journalist and broadcaster. Having joined the BBC in 1947, he became the corporation's longest-serving foreign correspondent, remaining in the role until his deat ...
. The figures weigh 40 tonnes each and cost £12,600. Similar figures representing "air" and "fire" were intended to be installed at the south end of the building; however, these were never constructed. During the 1950s, building staff nicknamed the statues "Mr and Mrs Parkinson", after
Cyril Northcote Parkinson, the Board of Trade civil servant who devised
Parkinson's Law which states "work expands so as to fill the time available for its completion". More recently MOD staff refer to the statues as the "Two Fat Ladies".
The
badge
A badge is a device or accessory, often containing the insignia of an organization, which is presented or displayed to indicate some feat of service, a special accomplishment, a symbol of authority granted by taking an oath (e.g., police and fir ...
of the
RAF is carved into stone columns either side of the southern entrance to the building, reflecting its initial use by the Air Ministry. The badge, featuring an Eagle superimposed on a circlet which is surmounted by a crown, was sculpted by
David McFall.
Statues
Several military statues exist in the grounds of the building or in close proximity.
* A statue of Major General
Gordon of Khartoum
Gordon may refer to:
People
* Gordon (given name), a masculine given name, including list of persons and fictional characters
* Gordon (surname), the surname
* Gordon (slave), escaped to a Union Army camp during the U.S. Civil War
* Gordon Heuck ...
dating from 1887–1888, sits at the Horse Guards Avenue end of Whitehall Gardens. The grade II listed statue by Sir
Hamo Thornycroft
Sir William Hamo Thornycroft (9 March 185018 December 1925) was an English sculptor, responsible for some of London's best-known statues, including the controversial statue of Oliver Cromwell outside the Palace of Westminster. He was a keen stu ...
is made from
bronze
Bronze is an alloy consisting primarily of copper, commonly with about 12–12.5% tin and often with the addition of other metals (including aluminium, manganese, nickel, or zinc) and sometimes non-metals (such as phosphorus) or metalloid ...
and sits on a Portland stone base.
*
Marshal of the RAF Hugh Trenchard, 1st Viscount Trenchard
Marshal of the Royal Air Force Hugh Montague Trenchard, 1st Viscount Trenchard, (3 February 1873 – 10 February 1956) was a British military officer who was instrumental in establishing the Royal Air Force. He has been described as the "Fat ...
(1873–1956) is commemorated by a 1961 bronze statue situated in Whitehall Gardens.
* The
Royal Air Force Memorial dating from 1923 is located at the Whitehall Steps on Victoria Embankment. Designed by Sir
Reginald Blomfield
Sir Reginald Theodore Blomfield (20 December 1856 – 27 December 1942) was a prolific British architect, garden designer and author of the Victorian and Edwardian period.
Early life and career
Blomfield was born at Bow rectory in Devon, w ...
and sculpted by Sir
William Reid Dick, the memorial is constructed from Portland stone and features a
gilt bronze eagle.
* Whitehall Gardens features the
Fleet Air Arm Memorial designed by
James Butler. It was unveiled on 1 June 2000 by
Charles, Prince of Wales
Charles III (Charles Philip Arthur George; born 14 November 1948) is King of the United Kingdom and the 14 other Commonwealth realms.
Charles was born at Buckingham Palace during the reign of his maternal grandfather, King George VI, a ...
.
Historic Rooms
Five rooms from buildings which were previously on the site were dismantled and incorporated into the building as conference rooms when the building was originally built. They are now known as the "Historic Rooms".
* Historic Room No.13 dates from around 1757 and was a reception room from Pembroke House. It features a decorative plaster ceiling with
modillion
A modillion is an ornate bracket, more horizontal in shape and less imposing than a corbel. They are often seen underneath a Cornice (architecture), cornice which helps to support them. Modillions are more elaborate than dentils (literally transl ...
cornicing. There is an
Ionic columned and
pilaster
In architecture, a pilaster is both a load-bearing section of thickened wall or column integrated into a wall, and a purely decorative element in classical architecture which gives the appearance of a supporting column and articulates an ext ...
ed framed alcove and female mask
keystone within the arch beneath
entablature
An entablature (; nativization of Italian , from "in" and "table") is the superstructure of moldings and bands which lies horizontally above columns, resting on their capitals. Entablatures are major elements of classical architecture, and ...
and flanking bays. There are 6-panel doors placed on circular panels.
* Historic Room No. 24 dates from 1757 and was also part of Pembroke House. It is similar to room no.13, but has an elaborated
alcove opposite a bay window in three part arrangement with decorative doors on each side in a frame of
fluted Ionic columns sitting on
pedestal
A pedestal or plinth is a support at the bottom of a statue, vase, column, or certain altars. Smaller pedestals, especially if round in shape, may be called socles. In civil engineering, it is also called ''basement''. The minimum height o ...
s. There is a decorative plasterwork ceiling with spider's web design and modillion cornicing and a carved
arabesque
The arabesque is a form of artistic decoration consisting of "surface decorations based on rhythmic linear patterns of scrolling and interlacing foliage, tendrils" or plain lines, often combined with other elements. Another definition is "Foliate ...
ornamented window shutter panels.
* Historic Room No. 25 is the former dining room from Pembroke House. It dates from 1773 and was designed by Sir
William Chambers and features a decorated plasterwork ceiling and an elaborate chimneypiece designed by
William Kent
William Kent (c. 1685 – 12 April 1748) was an English architect, landscape architect, painter and furniture designer of the early 18th century. He began his career as a painter, and became Principal Painter in Ordinary or court painter, b ...
, which is believed to originate from Cadogan House.
* Historic Room No. 27 is the former saloon of Pembroke House and dates from 1760. It was also designed by Sir William Chambers and features an elaborate
Palladian
Palladian architecture is a European architectural style derived from the work of the Venetian architect Andrea Palladio (1508–1580). What is today recognised as Palladian architecture evolved from his concepts of symmetry, perspective and ...
style compartmented plasterwork ceiling and
Corinthian columned and pedimented doorway with carved detailing.
* Historic Room No. 79 was formerly part of Cromwell House and dates from around 1722. It is a completely panelled room with decorated modillion cornicing, the north wall featuring elaborated carved
architrave
In classical architecture, an architrave (; , also called an epistyle; ) is the lintel or beam, typically made of wood or stone, that rests on the capitals of columns.
The term can also apply to all sides, including the vertical members, ...
central panel, the east wall has a formerly open three part pilastered
arcade
Arcade most often refers to:
* Arcade game, a coin-operated video, pinball, electro-mechanical, redemption, etc., game
** Arcade video game, a coin-operated video game
** Arcade cabinet, housing which holds an arcade video game's hardware
** Arcad ...
and an ornate carved pine
chimneypiece
The fireplace mantel or mantelpiece, also known as a chimneypiece, originated in medieval times as a smoke canopy, hood that projected over a fire grate to catch the smoke. The term has evolved to include the decorative framework around the fi ...
. There are
consoles supporting the mantle, carved with eagle heads and a pedimented
overmantel
The fireplace mantel or mantelpiece, also known as a chimneypiece, originated in medieval times as a hood that projected over a fire grate to catch the smoke. The term has evolved to include the decorative framework around the fireplace, and ...
.
Facilities
Beneath Main Building is a three-storey bunker complex housing the
Defence Crisis Management Centre (DCMC), otherwise known as "Pindar" after the
ancient Greek poet. The DCMC provides the government with a protected crisis management facility. Government ministers, senior military and civilian personnel, service and civilian operational and support staff are allocated space within the complex. The DCMC cost £126.3 million to construct and fit-out and became operational on 7 December 1992.
Security

On 1 June 2007, the building was designated as a protected site for the purposes of Section 128 of the
Serious Organised Crime and Police Act 2005
The Serious Organised Crime and Police Act 2005 (c. 15) (often abbreviated to SOCPA or SOCAP) is an Act of Parliament, Act of the Parliament of the United Kingdom aimed primarily at creating the Serious Organised Crime Agency. It also significan ...
. The effect of the act was to make it a specific criminal offence for a person to
trespass
Trespass is an area of tort law broadly divided into three groups: trespass to the person (see below), trespass to chattels, and trespass to land.
Trespass to the person historically involved six separate trespasses: threats, assault, battery ...
into the building. The restriction also includes the wall and vehicle ramps on the west side of the building adjoining Whitehall Gardens and Raleigh Green; however, it does not include the steps, ramps and porticos that give access to the inside of the building.
In August 2016, ''
The Times
''The Times'' is a British Newspaper#Daily, daily Newspaper#National, national newspaper based in London. It began in 1785 under the title ''The Daily Universal Register'', adopting its modern name on 1 January 1788. ''The Times'' and its si ...
'' newspaper reported that the specialist armed unit of the
Ministry of Defence Police
The Ministry of Defence Police (MDP) is a civilian special police force#United Kingdom, special police force which is part of the United Kingdom's Ministry of Defence (United Kingdom), Ministry of Defence. The MDP's primary responsibilities are ...
which guards Main Building could cease to carry out such duties. The MOD would only confirm that it was reviewing security arrangements at Main Building.
Protestors from
Palestine Action and Youth Demand sprayed red paint on the walls of the building on 10 April 2024. Several people were arrested on suspicion of criminal damage. The MOD estimated that it would cost at least £60,000 to remove the paint.
References
Citations
Sources
*
External links
Ministry of Defence— official website at GOV.UK
Henry VIII's wine cellar at Edible GeographyDrawings of initial and final proposed building design— at the
Government Art Collection
The Government Art Collection (GAC) is the collection of artworks owned by the UK government and administered by the Department for Culture, Media and Sport (DCMS). The GAC's artworks are used to decorate major government buildings in the UK and ...
Print of design for new government offices (now the Ministry of Defence Main Building)— at
Royal Institute of British Architects
The Royal Institute of British Architects (RIBA) is a professional body for architects primarily in the United Kingdom, but also internationally, founded for the advancement of architecture under its royal charter granted in 1837, three suppl ...
RIBApix
{{Authority control
Ministry of Defence (United Kingdom)
Military headquarters in the United Kingdom
Grade I listed buildings in the City of Westminster
Buildings and structures on the River Thames
Grade I listed government buildings
History of the City of Westminster
National government buildings in London
Buildings and structures completed in 1959
Government buildings completed in 1959
Military of the United Kingdom
Neoclassical architecture in London
Buildings and structures in the City of Westminster
Military history of the United Kingdom