Costain has been awarded around £150m of work by Thames Water to upgrade wastewater treatment assets across 15 sites in the Thames Valley, as part of the utility’s AMP8 investment programme. The works form part of Thames Water’s Wastewater Asset Assurance Programme (WAAP), which is focused on upgrading strategic treatment infrastructure across the region between [...]
Costain has completed 1,625km of gas main upgrades as part of its Contract Management Organisation (CMO) contract with Cadent, marking five years of delivery across the East of England. Cadent, the UK’s largest gas distribution network, manages more than 131,000km of pipeline infrastructure and supplies gas to around 11 million customers. Since 2021, Costain has [...]
Costain has been appointed to design and build a new junction on the M5 motorway, following an award through National Highways’ Regional Delivery Partnership (RDP) framework. The contract is valued at approximately £100m to Costain over a five-year period and covers the design and construction of Junction 22A in Somerset. New M5 junction to support [...]
Infrastructure solutions specialist Costain has been appointed to carry out two major biodiversity studies for Manchester Airports Group (MAG), supporting the airport operator’s long-term sustainability goals and its newly published Sustainability Strategy. The work will take place at Manchester Airport and East Midlands Airport, where Costain will develop robust qualitative biodiversity baselines to help MAG [...]
Costain has been selected to deliver road and infrastructure improvements as part of the Eastern Highways Alliance (EHA) Framework, EHF4, marking its first placement on a multi-local authority highways framework. The EHA Framework covers a broad range of civil engineering and construction works, including road surfacing, asset management, bridge and subway maintenance, and cycle lane [...]
Costain, the UK-based infrastructure solutions company, has developed a Carbon Design Tool to identify potential carbon hotspots early in infrastructure projects, allowing design teams to reduce emissions from the outset. The tool is intended for use at the design stage to forecast carbon-intensive elements of a project. Emissions are benchmarked against the latest RICS guidance, [...]
Costain has been appointed as Utilities Delivery Partner (Lot 3) on Sellafield Ltd’s long-term Infrastructure Delivery Partnership (IDP), a contract valued at up to £1bn for the company and forming part of a £2.9bn programme to support the safe operation and decommissioning of the UK nuclear site. The nine-year contract, with an option to extend [...]
Costain has reported a strong performance for the first half of 2025, increasing both operating profit and margin, even as revenue declined due to scheduled project completions and rephased work on HS2. The company’s strengthened forward order book and robust cash position are driving confidence in achieving its FY25 growth and margin targets. Revenue for [...]
Costain has been awarded a multi-million-pound engineering services contract by INEOS FPS, extending its long-standing role in supporting operations at the Kinneil Terminal, a critical component of the UK’s energy infrastructure. The three-year minimum contract will see Costain deliver engineering expertise to optimise the performance, safety, and efficiency of the terminal, which processes oil and [...]
Costain has been appointed by Storengy UK to deliver front-end engineering and design (FEED) services for the Keuper Gas Storage Project (KGSP)—a major underground hydrogen storage facility planned for development in Northwich, Cheshire. The project, located at the Holford brinefields, will involve the construction of 19 salt caverns and associated above-ground facilities for hydrogen treatment, [...]
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