HS2 investigates claims company overcharged for supplying workers

Firm accused of inflating billing costs for staff working on high-speed rail route's West Midlands section

The company building the high-speed rail line between London and Birmingham is investigating claims that one of its labour suppliers on the project charged overinflated rates for staff.

HS2 Ltd launched an investigation into a subcontractor providing workers to build the West Midlands section of the line, which has been beset with delays and cost overruns, amid allegations about its billing practices.