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Improving people's lives with smart infrastructure solutions

Smart infrastructure solutions

Our integrated 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 integrated services

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

Our integrated services

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

Our integrated 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.

How we improve lives

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's LGBT+ and Allies network celebrates diversity at Pride in London
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Costain appointed to deliver major redevelopment of Gatwick Airport station
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Half year trading update - 28 June 2019
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Costain appointed as sole maintenance service provider by United Utilities
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Costain opens new technology centre in North Somerset
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Research, development and innovation programme