Britain’s biggest housebuilders, including Barratt Redrow and Taylor Wimpey, face a multibillion-pound class action lawsuit over claims that they colluded over higher prices for homebuyers.

The lawsuit is being led by Mark McLaren, a former legal affairs manager at the consumer group Which?, on behalf of more than 700,000 consumers who bought a new-build between 2015 and 2026, against Barratt, Bellway, Berkeley Group, Persimmon, Taylor Wimpey, Vistry Group and Bloor Homes.