Working with Costain
We value a diverse supply chain and seek organisations that mirror our culture, behaviours and standards.
Working as an integrated team is essential to creating successful partnerships.
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Become a Costain supplier
Our customers deserve the best service and we want to work with responsible suppliers who have skills and experience across the full project lifecycle.
If you’re a supplier who’s interested in working on some of the UK’s most complex and important infrastructure projects, find out more about registering as a Costain supplier.
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Where we operate
Costain has been improving the lives of people through infrastructure for more than 150 years. Today, we’re involved in solving some of the UK’s most complex infrastructure challenges.
Our commitment to creating connected, sustainable infrastructure is core to all our activities within our four strategic markets of transport, water, energy and defence.
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