We use functional cookies for a number of reasons, such as keeping the Costain website reliable and secure and to analyse how our site is being used.
Will you accept our use of non-essential cookies?



Yes No Privacy Notice

Father washing hands with son
Improving people’s lives through connected, sustainable infrastructure

Transforming the performance of infrastructure

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.

Learn more

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.

Learn more

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.

Learn more

How we improve lives

Climate change and decarbonisation solutions

We're talking about...

Deep collaboration by our net zero pioneers is accelerating the UK's race to net zero

Meet Gareth, one of our extraordinary #NetZeroPioneers
watch video
Meet Bhavika, one of our extraordinary #NetZeroPioneers
watch video
Meet Rob, one of our extraordinary #NetZeroPioneers
watch video
Meet Mikaela, one of our #NetZeroPioneers
watch video
Meet Lee, one of our #NetZeroPioneers
watch video
Meet Andrew, one of our #NetZeroPioneers
watch video

Get to know us

Careers

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
Investors

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.

Read more
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.

Read more

Latest news

View all news
Costain to design vital upgrades to the Piccadilly line
Read more
Costain sponsors historic solo expedition to the South Pole
Read more
Costain appoints Sandra Johnson as Head of Public Affairs and Policy
Read more