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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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Climate change and decarbonisation solutions

COVID-19 support services

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.


We offer our clients leading edge solutions that are digitally optimised across the whole life cycle of their assets by integrating five core services that include future shaping strategic consultancy, consultancy and advisory, digital technology solutions, asset optimisation and complex programme delivery.

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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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How we improve lives

Latest news

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Costain wins place on strategic framework for TfL
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Greener tunnelling for London’s super sewer
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Board changes, Tony Quinlan
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Costain to transition its fleet to clean sustainable fuel sources as it joins the Climate Group EV100
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Costain appointed to G-Cloud12 framework on government’s Digital Marketplace
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