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Together we shape, create, deliver

Our purpose is to improve people’s lives by creating connected, sustainable infrastructure that enables people and the planet to thrive.

About us
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Technical engineering  advice framework for National Highways

Helping the highways network drive economic growth, improve safety and reliability, and further the UK’s decarbonisation goals

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Costain to design pioneering underground hydrogen storage project 

Design work will be critical to supporting UK decarbonisation

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Anglian Water Strategic Pipeline Alliance

Boosting drought resilience with 260km of new pipeline

Critical pipeline infrastructure will enhance the East of England’s resilience to climate change and water scarcity

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Costain to design first-of-a-kind advanced nuclear fuels facility

Project will establish Europe’s first advanced uranium fuels production facility to power the next generation of nuclear reactors

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Together
we deliver

Explore our sectors
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Our commitment to create connected, sustainable infrastructure is core to all our activities across our six sectors: Road, Rail, Integrated Transport, Energy, Water and Defence & Nuclear Energy.

Together
we solve

Explore our services
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As construction, consulting and digital partners we bring together a mix of experts to engineer solutions to the most complex infrastructure problems. We anticipate and solve our customers’ challenges, helping them deliver their strategies and progress their business plans.  

Together
we succeed

Careers at Costain
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We're looking for curious, collaborative and courageous people who'll help transform the performance of infrastructure. Whether you’re an experienced professional looking for a new challenge, or entering the workplace for the first time, we can offer you the very best opportunities and support for your career. 

We’re committed to building a long–term sustainable company that creates economic, environmental and social value for our stakeholders. Our ESG performance is the responsibility of every individual in our organisation.