Alex Vaughan, Chief Executive Officer, said: “Costain is now at a key inflection point where the strength of our growing, resilient end markets, strategic positioning with our customers and high-quality forward work position is set to deliver growth in H2 26 and a step change in our financial performance in FY 27 and beyond.”

Latest results for six months to June 30 showed an increase in pre-tax profits to £19.2m from £18.2m as turnover ticked-up to £543.1m from £525.4m.

The firm’s combined order book and preferred bidder book stood at a record £7bn with private and regulated customers now accounting for nearly half of all orders and no single-stage lump sum contracts on the books.

Vaughan said: “Our forward work is maintained at the record £7.0bn FY 25 position, with new long-term customer partnerships and breakthroughs into key target segments such as the ‘Great Grid Upgrade’ and new reservoirs.”