Bondholder Bombardier has unveiled to delegates and officials from Transport for London new carriages for the Elizabeth Line at an event held in Derby last week.
The event, held at Bombardier's factory on Litchurch Lane, allowed guests to see up close the first Aventra train destined for Crossrail.
Bombardier landed the £1 billion Crossrail deal in February 2014. Since then, the company has invested millions in its Derby site to prepare for the production of the trains, including a new £12.5 million testing and commissioning facility called V Shop.
The trains will feature air-conditioned walk-through carriages with capacity for 1,500 passengers, Wi-Fi and 4G. They will also be fully accessible for wheelchair users. The trains are due to enter service in May 2017 although Crossrail will not fully open until 2019.
Mike Brown, London's Transport Commissioner, said: "The Elizabeth Line trains, which are a great showcase of British design and manufacture, will be running on part of our network within a year. The trains are fully accessible, will have air cooling and, once the whole line opens, they will help our passengers move more easily into and across the city every day."
Peter Doolin, Vice-President of Projects (Crossrail and Underground) at Bombardier, said: "Bombardier is delighted to be working with TfL on this flagship project to deliver the new Elizabeth Line trains, which are based on our very latest Aventra product family."