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About us

Our purpose is to improve people’s lives by helping to: connect and keep the nation moving: keep water clean and flowing: power communities sustainably and keep people safe.

Our story

We’ve been improving the lives of people since 1865.

Costain is one of the first to achieve the BSI Kitemark for innovation


We are named in the Times Top 50 Employers for Women

Costain at a glance

Key facts

Listed on the UK stock exchange and recognised as one of the UK’s leading smart infrastructure solutions companies


Founded in Liverpool


Employees across the UK

Key facts

Broad range of innovative services across the whole lifecycle of our clients' assets


Adjusted Group revenue for year end 31 December 2020

Costain at a glance

Meet the experts


Improving people's lives