£180 million worth of train carriages built at Derby-based Bombardier will be on show for the Transport Minister, Patrick McLoughlin, today.
The 130 carriages are being tested in London and will be rolled out across the city in December.
More top news
Dramatic footage shows the moment a police officer was confronted by a gunman while called to a routine call to a burglary.
An MP who suggested benefit claimants should have vasectomies will keep his new job as a Conservative vice chairman, No 10 sources said.
The Labour leader criticised the government for handing out contracts to the now-defunct construction firm after a third profit warning.