The Competition and Markets Authority before warned its deal could result in a substantial lessening of competition, leading to higher prices and lower quality building materials for UK construction projects.

Investigators said they were concerned about the supply of ready-mixed concrete, non-specialist aggregates or asphalt in 15 local markets across the UK.

Breedon now plans to offload several ready-mixed concrete plants and an asphalt plant in England, two quarries and a cement terminal in Scotland to meet concerns.

This morning the Competition and Markets Authority said it believed that the undertakings might be acceptable.

Breedon said expected to be able to finalise the required undertakings to the CMA’s satisfaction, paving the way for the integration of the remaining former Cemex assets into the group later this year.

Until then the plants will continue to be held separate from Breedon and operated as Pinnacle Construction Materials.