Private company

Mott MacDonald

Logo: Lukasnovo, Public domain, via Wikimedia Commons4

UK-based onsultant company

The Mott MacDonald Group is a management, engineering and development consultancy headquartered in the United Kingdom. It employs over 19,500 staff in 150 countries. Mott MacDonald is one of the largest employee-owned companies in the world.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

1902Founded1
  • HeadquartersCroydon1
  • Websitewww.mottmac.com
  • Legal formPrivate Limited Company3
  • LEI2138005ISJ1YP4J2P6073
  • StatusActive3
  • LEI statusIssued and current3
  • Registered address10 FLEET PLACE, EC4M 7RB London, United Kingdom3
  • Registered withCompanies House, 012439673

The Mott MacDonald Group is a management, engineering and development consultancy headquartered in the United Kingdom. It employs over 19,500 staff in 150 countries. Mott MacDonald is one of the largest employee-owned companies in the world.2

Corporate structure

Mott MacDonald sits at the top of its group. 4 entities, 2 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

  • Mott MacDonald London, United Kingdom
    • Mott MacDonald CZ Subsidiary · Czechia
    • موت ماكدونالد ليمتد - ابوظبي 1 Branch · London, United Kingdom
    • موت مكدونالد ليمتد Branch · Croydon, United Kingdom

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); subsidiaries, stakes and holdings from Wikidata (CC0). Each entity in the chart links to its source.

The story

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 while Sir M MacDonald & Partners was a water engineering consultancy with projects that included the Aswan Dam. 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 church at Bank tube station, the underpinning of Clifford's Tower, the reconstruction of Southwark Bridge 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, 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 and the Trent Bridge in Nottingham. It also designed the enlargement of the City & South London Railway tunnels and their extension past Camden Town and Clapham South to form the Northern line of the London Underground.

Both founding partners died in 1938, at which time most of the construction projects stopped. During the 1940s after World War II, 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 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 between the United Kingdom and France beneath the English Channel.

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.

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 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.

Read the full text

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, a South African electrical engineering consultancy. 2009 also marked the opening of Mbombela Stadium, 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, 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.

From Wikipedia’s article on Mott MacDonald, shared under CC BY-SA 4.0.5

Subsidiaries and ownership

Subsidiaries

  • Mott MacDonald CZ

From Wikidata.1

Timeline

  1. 1902Founded Founded1

Sources

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