One of this company’s founders, Sir Murdoch MacDonald, worked on Egypt’s Aswan Low Dam and both its later heightening projects. This began an association with hydroelectric power that has lasted more than 100 years, with the firm appointed an adviser on the £8bn Northern Tidal Power Gateways project in March. Under new managing director Mike Haigh, 57, and chairman Keith Howells, 64, the consultancy’s current projects include London’s £15bn Crossrail scheme and the Thames Tideway Tunnel.

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Company details
Year2017
Rank41
CompanyMott MacDonald
ActivityManagement and engineering group
LocationCroydon
Sales £m*1,407
Profit £m*86
Year endDec 16
Principal shareholdersEmployees (92%), trust (8%)
Staff15,004
Founded1989
Websitewww.mottmac.com

If applicable:

* Supplied by company † Annualised figure