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Improving people's lives with smart infrastructure solutions

How we improve lives

Smart infrastructure solutions

Our services

We help to influence, shape and deliver solutions through leading concept, design and programme management consultancy for our clients’ complex and niche engineering problems.

Our services

We have broadened our delivery track record across a wider range of services to ensure recognition as the most reliable delivery partner.

Our services

We deploy technology-based solutions across project lifecycles to create value and achieve complex outcomes for clients.

Our services

We support the whole-life of our clients' infrastructure assets to ensure their assets function as effectively as possible to deliver an improved service to their customers.

Get to know us


We are looking for skilled, expert and motivated people who will help us meet national needs in transportation, energy and water. As a vibrant, challenging and growing business we provide tremendous opportunities for everybody.

Join Costain

We offer a broad range of innovative services across the whole life-cycle of our clients’ assets, through the delivery of integrated consultancy, asset optimisation, technology and complex delivery services.

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Our culture

We are building a long-term sustainable business that creates more economic, environmental and social value through greater corporate responsibility. Costain cares about all stakeholders and responsibility is at the core of our business.

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Latest news

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Costain engineer becomes 100th Tideway apprentice
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The Hydrogen Economy: Decarbonising the UK energy sector
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Andrew Wyllie, Costain chief executive, becomes the 154th president of the ICE
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Costain awarded six-year framework contract by Highways England
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Costain enables major milestone for connected and autonomous vehicles in the UK
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Research, development and innovation programme