Funding for new trains for the Elizabeth line has been confirmed, according to the mayor of London.
Sadiq Khan said he and Transport for London (TfL) had been “making the case to the government” that the investment would boost UK manufacturing.
Mr Khan said the project would “support supply chains and jobs around the country”.
Ten nine-car Aventra trains are to be built in Derby, with the company Alstom also keeping the maintenance contract until 2046.
Mr Khan said: “I’m delighted that ministers have confirmed the funding for these state-of-the art trains.
“The transformational Elizabeth line is the fastest-growing railway in the UK, with more than 350 million journeys made on the line since its opening.
“It is significantly helping to drive recovery from the pandemic and adding an estimated £42bn to the UK economy.”