
Costain
Costain improves people’s lives by creating connected, sustainable infrastructure that enables people and the planet to thrive. Through the delivery of predictable, best-in-class solutions across the transport, water, energy and defence markets, we are creating a sustainable future and securing a more prosperous, resilient and decarbonised UK.
By bringing together our unique mix of construction, consultancy, engineering and digital services, we work strategically with our customers and suppliers to meet critical national needs.
Transport: In transport, we work with our customers to develop and optimise the strategic infrastructure that will enable economic growth at both the local and national level.
Energy: In energy, we work with our customers on the transition to clean energy while providing practical solutions that improve the efficiency, sustainability and resilience of existing infrastructure.
Water: We work with water and wastewater companies to develop solutions that improve water quality, affordability and resilience.
Defence & Nuclear Energy: In Defence and Nuclear Energy, we deliver critical national infrastructure combining our civil and defence nuclear experience, ensuring long-term energy security and a sustained UK deterrent programme.
Together, our people transform the performance of the infrastructure that connects, protects and powers people’s lives.
Equality, diversity and inclusion
Costain is an inclusive and family friendly employer: we’re committed to tackling systemic barriers so we create a psychologically safe workplace, where everyone has equal opportunities to reach their full potential.
We know that by being more diverse we will be more innovative, have a greater understanding of our clients’ needs and deliver smarter, more inclusive solutions.
At Costain, we currently have six inclusion networks:
- Disability and Wellbeing Network
- LGBT+ & Allies Network
- Parenting and Carers Network
- Religion, Ethnicity and Cultural Heritage Network
- Services and Service Families Network
- Women’s Network
All employees are encouraged to join any of the inclusion networks as members of the represented group or as active allies. Our members and allies have an essential role to play in ensuring an inclusive and intersectional culture.
For more information, visit our website.
Our benefits
Our benefits
We benchmark our benefits packages to ensure they are attractive for all our people.
We’re dedicated to providing a broad range of rewards and benefits that motivate, engage and deliver personal and business excellence, both now and in the future.
Find out more about our core benefits and optional benefits our people can opt-in to.
Sustainability
We’ve been improving people’s lives for more than 160 years. As engineering, construction, consulting, and digital experts, we create sustainable infrastructure for a more prosperous, resilient and decarbonised UK.
In our Sustainability Report, we demonstrate our commitment to being a responsible business, a trusted employer and community partner, and how we’re safeguarding our planet’s future. These principles shape how we deliver on our purpose to improve people’s lives and our vision to create a sustainable future. This approach is underpinned by our core values: integrity, customer focus, safety and wellbeing, and environmental and social responsibility. Social value
We believe that creating connected, sustainable infrastructure starts with creating opportunities for people to thrive. Through our Social Value Plan, we are committed to delivering social, economic and environmental benefits beyond project requirements, with an ambition to improve one million lives by 2030.
This includes promoting equitable opportunities, supporting underrepresented groups, investing in local communities, driving sustainable procurements and creating meaningful pathways into employment and skills development. Learn more about our social value commitments.













