The Mott MacDonald Group is a management, engineering and development consultancy headquartered in the
United Kingdom
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Northwestern Europe, off the coast of European mainland, the continental mainland. It comprises England, Scotlan ...
. It employs over 19,000 staff in 150 countries.
Mott MacDonald is one of the largest
employee-owned companies in the world.
History
Mott MacDonald was formed in 1989 through the merger of
Mott, Hay and Anderson and
Sir M MacDonald & Partners.
Mott, Hay and Anderson was a transportation engineering consultancy responsible for projects such as the
London Underground
The London Underground (also known simply as the Underground or as the Tube) is a rapid transit system serving Greater London and some parts of the adjacent home counties of Buckinghamshire, Essex and Hertfordshire in England.
The Undergro ...
while Sir M MacDonald & Partners was a water engineering consultancy with projects that included the
Aswan Dam
The Aswan Dam, or Aswan High Dam, is one of the world's largest embankment dams, which was built across the Nile in Aswan, Egypt, between 1960 and 1970. When it was completed, it was the tallest earthen dam in the world, surpassing the Chatuge D ...
.
The merger made Mott MacDonald one of the first international engineering, management, and development consultancies.
Mott, Hay & Anderson

Mott, Hay and Anderson was founded as a private partnership between
Basil Mott and
David Hay in 1902, with the original firm name of Mott & Hay. Prior to forming the original partnership, Mott and Hay had spent time building
London tube railways and Hay had worked on the
Blackwall Tunnel. Both engineers had worked together since 1888 on the
City & South London Railway under
Sir Benjamin Baker and
James Henry Greathead. Early projects included the reconstruction and extension of the City and South London Railway (C&SLR), the building and extension of the Central London Railway, the construction of lifts beneath
St Mary Woolnoth
St Mary Woolnoth is an Anglican church in the City of London, located on the corner of Lombard Street, London, Lombard Street and King William Street, London, King William Street near Bank junction. The present building is one of the Commission f ...
church at
Bank tube station, the underpinning of Clifford's Tower, the reconstruction of
Southwark Bridge
Southwark Bridge ( ) is an arch bridge in London, for traffic linking the district of Southwark and the City of London, City across the River Thames. Besides when others are closed for temporary repairs, it has the least traffic of the List of ...
and the widening of
Blackfriars Bridge. Mott and Hay employed a young engineer called David Anderson as resident engineer for the latter project.
The firm also advised on proposals for underground railways in
Sydney
Sydney is the capital city of the States and territories of Australia, state of New South Wales and the List of cities in Australia by population, most populous city in Australia. Located on Australia's east coast, the metropolis surrounds Syd ...
, Africa, and Russia.
David Anderson was made a partner in 1920 after returning from army service. The firm was thereafter known as Mott, Hay and Anderson. During the 1920s, it designed the rolling bridge over the
River Dee at
Queensferry, the
Tyne Bridge in
Newcastle
Newcastle usually refers to:
*Newcastle upon Tyne, a city and metropolitan borough in Tyne and Wear, England, United Kingdom
*Newcastle-under-Lyme, a town in Staffordshire, England, United Kingdom
*Newcastle, New South Wales, a metropolitan area ...
and the
Trent Bridge in
Nottingham
Nottingham ( , East Midlands English, locally ) is a City status in the United Kingdom, city and Unitary authorities of England, unitary authority area in Nottinghamshire, East Midlands, England. It is located south-east of Sheffield and nor ...
.
It also designed the enlargement of the
City & South London Railway tunnels and their extension past
Camden Town
Camden Town () is an area in the London Borough of Camden, around north-northwest of Charing Cross. Historically in Middlesex, it is identified in the London Plan as one of 34 major centres in Greater London.
Laid out as a residential distri ...
and
Clapham South to form the
Northern line
The Northern line is a London Underground line that runs between North London and South London. It is printed in black on the Tube map. It carries more passengers per year than any other Underground linearound 340million in 2019making it the bu ...
of the
London Underground
The London Underground (also known simply as the Underground or as the Tube) is a rapid transit system serving Greater London and some parts of the adjacent home counties of Buckinghamshire, Essex and Hertfordshire in England.
The Undergro ...
.
Both founding partners died in 1938, at which time most of the construction projects stopped. During the 1940s after
World War II
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 ...
, it began expanding and working on additional projects, some of which including repairing of roads and bridges damaged or destroyed during the war, and, later, included the
Victoria line
The Victoria line is a London Underground line that runs between in South London, and in the east, via the West End of London, West End. It is printed in light blue on the Tube map and is one of the only two lines on the network to run comp ...
of the London Underground and Australia's
Melbourne Underground Rail Loop. The firm continued in these fields until the merger with Sir M MacDonald & Partners in 1989, at which time it was also working on the
Channel Tunnel
The Channel Tunnel (), sometimes referred to by the Portmanteau, portmanteau Chunnel, is a undersea railway tunnel, opened in 1994, that connects Folkestone (Kent, England) with Coquelles (Pas-de-Calais, France) beneath the English Channel at ...
between the United Kingdom and
France
France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlan ...
beneath the
English Channel
The English Channel, also known as the Channel, is an arm of the Atlantic Ocean that separates Southern England from northern France. It links to the southern part of the North Sea by the Strait of Dover at its northeastern end. It is the busi ...
.
Sir M MacDonald & Partners

Sir M MacDonald & Partners was named after
Murdoch Macdonald, a British civil engineer and later politician. The company formed out of affairs relating directly to British infrastructure development in Egypt between 1890 and 1930, in particular MacDonald's involvement with
Aswan Low Dam, starting in 1898. MacDonald was involved in the original construction of the Aswan Dam and later became an advisor to the Egyptian Ministry of Public Works after the dam was completed in 1902.
He became closely associated with the development and first heightening of the Aswan Low Dam for the development of
hydroelectricity
Hydroelectricity, or hydroelectric power, is Electricity generation, electricity generated from hydropower (water power). Hydropower supplies 15% of the world's electricity, almost 4,210 TWh in 2023, which is more than all other Renewable energ ...
.
MacDonald retired from his service with the Egyptian government in 1921 and returned to Britain where he began a partnership with Archibald MacCorquodale. In 1927, the two were later joined by PH East (also an engineer in the Egyptian government from 1907 to 1926) and
Oswald Longstaff Prowde, at which time the name of the company was changed to Sir M MacDonald & Partners. One of the first major projects of the partnership included the second heightening of the Aswan Low Dam, which continued from 1929 through design and construction stages until 1933.
The firm continued on projects through its merger with Mott, Hay and Anderson in 1989.
Post-merger
Mott MacDonald began to expand after the 1989 merger. Early acquisitions included the consultancies of
Husband & Company as well as James Williamson & Partners. These acquisitions brought Mott MacDonald's total staffing to 3,300. Its 1994 acquisition of Ewbank Preece expanded its reach into the power and telecommunication fields, with its 2000 purchase of Cambridge Education Associates expanding its education consultancy. Additional early acquisitions included India-based firm Dalal Consultants in 2001, cost consultants Franklin + Andrews in 2002 and health practice HLSP in 2003. In 2007, Mott MacDonald bought Dutch firm Euroconsult BMB who specialized in international development and natural resource management.

2008 marked the first year that Mott MacDonald earned more internationally than it did in the United Kingdom, earning it recognition by ''
New Civil Engineer'' as the ''International Consultant of the Year''.
Its top two international projects for that year were the
Delhi Metro
The Delhi Metro is a rapid transit system that serves Delhi and the adjoining satellite cities of Faridabad, Gurugram, Noida, Bahadurgarh, and Ballabhgarh in the National Capital Region (India), National Capital Region of India. The system cons ...
in India and
Macau City of Dreams in China. The same year, the firm had 7,021 staff assigned to overseas projects, with 6,669 working overseas.
Mott MacDonald purchased Fulcrum Consulting in 2009 as a way of expanding its sustainable energy consultancy in the building sector.
Fulcrum was a building services engineer consultancy and a founding member of the
UK Green Building Council, specializing in green and eco-friendly engineering and design. Fulcrum was responsible for projects such as the
Darwin Centre and considered a pioneer of
low-energy building techniques.
MacDonald also expanded to open principal offices in Turkey, Kazakhstan, Albania, and Serbia while opening smaller offices in throughout Africa. It also purchased
Merz & McLellan
Merz and McLellan was a leading British electrical engineering consultancy based in Newcastle.
History
The firm was founded by Charles Merz and William McLellan in Newcastle upon Tyne in 1902 when McLellan joined Merz's existing firm establis ...
, a South African electrical engineering consultancy.
2009 also marked the opening of
Mbombela Stadium
The Mbombela Stadium is a association football, football and Rugby union all-seater stadium in Mbombela in the Mpumalanga province of South Africa. It was one of 10 venues for the 2010 FIFA World Cup and one of 5 newly constructed stadiums for th ...
, a stadium in South Africa for which Mott MacDonald designed the roof. In 2010, the firm added South African healthcare and development specialist HDA, and Australian engineering consultancy Hughes Trueman to its portfolio. In 2011, Mott MacDonald purchased Australian firm Mortimer Project Management and opened an office in
Auckland
Auckland ( ; ) is a large metropolitan city in the North Island of New Zealand. It has an urban population of about It is located in the greater Auckland Region, the area governed by Auckland Council, which includes outlying rural areas and ...
, New Zealand.
Mott MacDonald continued to expand its international presence in April 2013 with the purchase of Habtec Engenharia Ambiental,
a Brazil-based environmental consultancy with 80 people. Later the same month, it purchased PD Naidoo & Associates, a consultancy based in South Africa with 550 people.
The acquisitions added to the company's previous purchases of Canadian consultancy Engineering Northwest, oil and gas firm Procyon, and the oil and gas operations of
Mouchel.
In 2014, Mott MacDonald acquired AWT, a specialist water technology and consulting company based in New Zealand and Australia.
During 2014, Mott MacDonald acquired its UK water industry design and build joint venture partner Bentley Holdings Ltd (including its subsidiary company JN Bentley Ltd). The move followed a 15-year partnership through the joint venture Mott MacDonald Bentley.
In 2015, Mott MacDonald and Hatch announced that the
Hatch Mott MacDonald (HMM) joint venture would become two distinct businesses. HMM’s Canada business would become part of Hatch while HMM's US business would become part of Mott MacDonald. HMM’s pipelines business, which operated in both Canada and the US, would also join Mott MacDonald.
In 2024, Mott MacDonald generated revenue of £2.52bn revenue (up 6% on 2023's £2.37bn) and reported a pre-tax profit, up 9%, of £123.3m.
Projects

Mott MacDonald has worked on many notable projects. It was the
design engineer
A design engineer is an engineer focused on the engineering design process in any of the various engineering disciplines (including civil, mechanical, electrical, chemical, textiles, aerospace, nuclear, manufacturing, systems, and struct ...
for
Heathrow Terminal 5
Heathrow Terminal 5 is an airport terminal at Heathrow Airport, the main airport serving London. Opened in 2008, the main building in the complex is the largest free-standing structure in the United Kingdom. Until 2012, the terminal was used ...
sub-structures and foundations, as well as providing rail assurance services, tunnelling advice and project and program management. The project began in 2002, with construction being completed in 2008.
Mott MacDonald was the engineer and worked with
Denton Corker Marshall on the design of the
Manchester Civil Justice Centre
Manchester Civil Justice Centre is a governmental building in Manchester, England. Completed in 2007, it houses Manchester's county court and the Manchester District Registry of the High Court of Justice, High Court, the city's family proceedin ...
which was completed in 2007.
The Centre was the largest court complex in the United Kingdom built in a century and has won 26 awards for its design, including the ''Major Project of the Year Award'' in 2008 from Building.com.
The Centre was designed and constructed to have minimal impact on the environment and included a narrow form, acoustic privacy, and natural ventilation. It was also featured in the book ''Microgeneration: Low Energy Strategies for Larger Buildings'' for its sustainability features.
In 2012, Mott MacDonald was chosen as the concept designer for engineering the
New Mosaic Stadium.
Mott MacDonald was chosen to be part of the design-build team for a $41 million bridge rehabilitation project announced by New York Governor
Andrew Cuomo
Andrew Mark Cuomo ( , ; born December 6, 1957) is an American politician and lawyer who served as the 56th governor of New York from 2011 until his resignation in 2021. A member of the Democratic Party and son of former governor Mario Cuomo, ...
in January 2014.
The project is scheduled to repair bridges in
Niagara County in the western part of New York.
The $125 million contract for engineering the single bore tunnel segment of the
Silicon Valley BART extension was awarded to a
joint venture
A joint venture (JV) is a business entity created by two or more parties, generally characterized by shared ownership, shared returns and risks, and shared governance. Companies typically pursue joint ventures for one of four reasons: to acce ...
bid placed by Mott MacDonald and
San Francisco
San Francisco, officially the City and County of San Francisco, is a commercial, Financial District, San Francisco, financial, and Culture of San Francisco, cultural center of Northern California. With a population of 827,526 residents as of ...
based PGH Wong Engineering in January 2019.
Since 1998, Mott MacDonald has been providing waste water management for
Union Pacific
The Union Pacific Railroad is a Class I freight-hauling railroad that operates 8,300 locomotives over routes in 23 U.S. states west of Chicago and New Orleans. Union Pacific is the second largest railroad in the United States after BNSF, ...
. In January 2018, a Mott MacDonald employee distracted by a cell phone call left a tank unattended for an hour while working at the railroad's
Albina Yard in
Portland, Oregon
Portland ( ) is the List of cities in Oregon, most populous city in the U.S. state of Oregon, located in the Pacific Northwest region. Situated close to northwest Oregon at the confluence of the Willamette River, Willamette and Columbia River, ...
, United States. The tank overflowed and released several thousands gallons of oil into the environment according to
US attorneys. 1,800 gallons of the released oil was estimated to have been lost into the
Willamette River
The Willamette River ( ) is a major tributary of the Columbia River, accounting for 12 to 15 percent of the Columbia's flow. The Willamette's main stem is long, lying entirely in northwestern Oregon in the United States. Flowing northward ...
. The former employee Robert LaRue Webb II was convicted with violating the
Clean Water Act
The Clean Water Act (CWA) is the primary federal law in the United States governing water pollution. Its objective is to restore and maintain the chemical, physical, and biological integrity of the nation's waters; recognizing the primary respo ...
in October 2019 and was sentenced to a probation and a fine for negligently causing the oil release. The clean up and emergency response cost the railroad over $500,000.
United States Coast Guard
The United States Coast Guard (USCG) is the maritime security, search and rescue, and Admiralty law, law enforcement military branch, service branch of the armed forces of the United States. It is one of the country's eight Uniformed services ...
,
EPA and
Oregon Department of Environmental Quality assisted with the clean up.
Further reading
* Newman Neame Ltd. (1965), ''Mott, Hay & Anderson, Consulting Civil Engineers''
* Mott MacDonald (2002), ''One hundred years of transportation''
References
External links
*
Cambridge EducationMott MacDonald Bentley
{{Authority control
Construction and civil engineering companies established in 1989
Construction and civil engineering companies of the United Kingdom
Consulting firms established in 1989
Design companies established in 1989
Employee-owned companies of the United Kingdom
Engineering consulting firms of the United Kingdom
International engineering consulting firms
Technology companies established in 1989
1989 establishments in England