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Improving people's lives with smart infrastructure solutions

Smart infrastructure solutions

Our integrated services

We work with our clients in their business and investment planning to develop new solutions to meet changing needs, leveraging our deep client insight, leading edge expertise and broad range of capabilities.

Our integrated services

We improve our clients’ business performance by providing value adding consultancy and advisory services, leveraging our deep client insight, leading edge expertise and broad range of capabilities.

Our integrated services

We transform business performance and infrastructure intelligence through the development and integration of leading edge digital technology solutions built on our deep client insight.

Our integrated services

We optimise the performance of our clients’ existing infrastructure assets and operational practices by combining our deep client insight and leading edge expertise, thereby increasing capacity, improving resilience, minimising downtime and reducing operating costs.

Our integrated services

Our complex programme delivery is safer, faster, better, smarter and costs less as a result of our pioneering working practices and collaborative behaviours.

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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, water and defence. 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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Progress in A19 project paves way for flyover work to begin
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A14 Huntingdon bypass opens to the public
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Update on the A465 contract and trading
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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