Costain Group PLC (LSE:COST) has secured a five-year extension to its long-standing framework agreement with EDF, a deal worth £75 million that will see the company continue providing project controls services across all eight of EDF’s UK nuclear power stations. The renewal builds on a partnership established in 2017 and reinforces Costain’s strategy of deepening relationships with major infrastructure owners, while contributing to the safe and efficient operation of the nation’s nuclear assets.
The company’s outlook reflects a blend of financial stability and constructive market sentiment. A solid balance sheet and disciplined debt management remain key strengths, though pressure on margins and softer cash generation point to areas where performance could improve. Overall, Costain’s valuation appears reasonable, suggesting scope for steady — if moderate — shareholder returns.
More about Costain
Costain Group PLC delivers integrated infrastructure solutions designed to support a more sustainable and connected UK. Operating across transport, water, energy, and defence markets, the company combines construction, engineering, consultancy, and digital capabilities to help clients meet essential national infrastructure and decarbonisation objectives.
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