Bombardier has released the first image of the new Aventra train it is building for London Overground.

Transport for London (TfL) awarded Bombardier a £260 million contract for 45 new four-car EMUs to replace the Class 315 and Class 317 trains TfL inherited when it took over some of the West Anglia Main Line services out of Liverpool Street.

The contract included a 35-year maintenance agreement, taking the total value to £358 million.

The new 20-metre vehicles will go into service in 2018 and will follow the arrival of Crossrail’s Aventra trains to the capital.