Southern has signed a second contract with Derby-based train builders Bombardier, worth £180m, for an additional 116 carriages, which will serve some of the capital’s busiest commuter routes from 2015.
The 116 new carriages will initially be used on the Thameslink route, allowing the release of existing rolling stock to newly electrified routes across the country.
Confirmation of the deal came as Transport Secretary Patrick McLoughlin visited the Stewarts Lane Depot in Battersea on Tuesday. Southern is preparing a new fleet of 130 carriages at the depot for use on its services from December.
Mr McLoughlin said: “Commuters deserve a first class rail network and comfortable modern trains. Southern is delivering that.”