The firm, which operates both as Strabag UK and through Strabag SE, posted combined UK  turnover of £700m for 2024, up 10% on the previous year.

Growth is being powered by big-ticket jobs like HS2 and the £4.2bn Woodsmith potash mine, along with the upcoming £2.4bn Haweswater Aqueduct Resilience Programme for United Utilities.

Strabag will start work on HARP next year replacing six tunnel sections totalling 50km along the 110km aqueduct route running through Cumbria and Lancashire.

The contractor is working in joint venture with Skanska and Costain on HS2’s London tunnels section where work is also expected to get underway next year.

Strabag also expects construction to ramp up again in 2027 at the North York Moors Woodsmith potash mine site after a slowdown and project review following Anglo American’s takeover of the scheme.

UK headcount has hit 1,426, including more than 600 directly employed skilled operatives.

Strabag UK managing director Andrew Dixon said: “The UK now operates as a ‘core country’ in the Strabag group and from 1 January 2025 became one of the thirteen divisions that make up the entire group.

“This highly significant recognition underlines the group’s long-term commitment to grow the company to become one of the UK’s market leaders.”

He added that the firm is now building up a new regional building unit in the West Midlands, aiming to expand nationally in industrial and data centre work.

The year also saw Strabag complete a ground engineering job and an exploratory tunnel for SSE in Scotland.