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United Kingdom

Working with clients, we’re turning obstacles into sustainable infrastructure and development solutions. Each of our 30 offices around the UK reflects our focus of opening opportunities and delivering long-lasting value. We apply our diversity of technical, management, and financial skills on projects ranging from nationally strategic infrastructure to organizational change programs.


We are pushing forward the performance of buildings for all purposes, from civic and commercial and retail to transport, education, and sports.

In Belfast, we contributed to the transformation of shipbuilding yards at Titanic Quarter into one of the world’s largest urban-waterfront regeneration projects.

We’ve helped deliver award-winning sustainable buildings. With our help, the Dogs Trust new rehoming center and the Houghton-le-Spring Primary Care Centre attained the highest sustainability rating – Outstanding – under the Building Research Establishment Environmental Assessment Method (BREEAM). For The Laboratory at Dulwich College, we designed a thermally active system connected to borehole cooling to maintain a comfortable temperature within 18 labs. Our solution is unique and four times more energy-efficient than conventional air conditioning. It enabled the facility to achieve a BREEAM rating of "excellent."

An increasing number of clients seek to improve the performance of existing assets. We completed two "green retrofit" projects for the government, 2 St. Pauls Place in Sheffield and the Capital in Liverpool, whose performance surpasses that of all but the most advanced new-build commercial developments.

Having designed a venue at the London 2012 Olympics, Wembley National Stadium, the home of Rugby Football Union, Twickenham, and Edgbaston Cricket Ground, we’re considered to be at the forefront of sports design. Recent projects include Leeds Arena, Casement Park in Belfast, and the Sir Chris Hoy Velodrome, Glasgow.


We continue to be at the heart of the modernization program at Heathrow Airport. As well as working on the UK’s largest ever airside project – the $612 million (£490 million) Heathrow Terminal 2B – we designed, managed, and integrated 28 IT systems for the entire $3.1 billion (£2.5 billion) Terminal 2 complex.

We’re at the forefront of the UK’s resurgent rail sector with leading roles on the country’s principal projects: High Speed Two, Crossrail, East London Line, London Underground station upgrades, Thameslink upgrade, and the Northern Hub project. We’ve played a leading role on almost all tram projects in UK towns and cities.

We developed a reporting tool for Highways England to assess the UK’s program of all-lane running on major roads. We developed an alternate design for the $101 million (£81 million) link road between the M18 motorway and Doncaster’s Robin Hood Airport, which identified opportunities for 55% cost savings. Working together, lean efficiencies, performance optimization and waste reduction have been achieved during the construction, management, and operation of highways.


We work with water and wastewater service providers on all elements of business planning, technical and project management, feasibility, investigation and design, and construction, providing an integrated, efficient service.
We’ve been working with the UK's largest water and wastewater services provider for over 20 years. We’ve helped deliver improvements across their 102 water treatment works, 265 reservoirs, 350 sewage works, 67,000 miles (108,000 kilometers) of sewer, and 2,818 pumping stations. Projects include a vast interceptor, storage, and transfer tunnel to halt continued sewer overflows, and enhanced sludge digestion aimed at making sewage treatment more sustainable.

Our joint venture with contractor JN Bentley, Mott MacDonald Bentley, was created to deliver long-term programs of work. Since its establishment in 1999, Mott MacDonald Bentley has experienced major success, working on world-changing projects and winning multiple awards for quality and innovation. Mott MacDonald Bentley works on projects such as developing standardized precast components for service reservoirs and the construction of a sludge processing facility with access roads and canal and river crossings.


We've worked with National Grid on two electricity substation alliances, as well as maintaining and upgrading the gas transmission network. For National Grid's London power tunnels we carried out feasibility design and monitored design and construction of 20 miles (32 kilometers) of tunnels, 14 shafts, and two major substations, plus installation of 40 miles (64 kilometers) of high-voltage cable. Our work on electricity transmission includes high-voltage connectors with northern Europe and Ireland.

We straddle the entire nuclear power life cycle. We’re part of the Axoim alliance, with a 15-year contract to provide design services to Sellafield Limited. We’re also providing civil and power engineering for the Hinkley Point C power station. To accelerate development of wave and tidal energy projects off the coast of Scotland, we’re providing commercial, procurement, risk, and project management services to the UK Crown Estate.


Over the course of 13 years managing education services in the London Borough of Islington, the number of children achieving GCSE grade A* to C rose from 26.5% to 74%. We are now managing education services for Slough Borough Council.


Our teams are working with National Health Service Trusts and hospitals to improve operational efficiencies, realize savings, uphold workforce standards, and preserve frontline services to achieve better patient outcomes.

We led all commercial and contractual negotiations on behalf of NHS Wales Informatics Service for PACS, a new picture archiving and communications solution that allows digital clinical images to be shared across NHS Wales. The solution saved $20 million (£16 million), a 38% reduction in spending.

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