The first train will run between Wembley Park and Watford, gradually
extending its range as supporting infrastructure works are completed.

The remainder of the fleet of 50 Metropolitan line trains will enter
service by next year, and will be followed by 53 trains for the
Hammersmith & City and Circle Lines in 2012. A further batch of 80
trains for the District Line will be delivered between 2013 and 2015.
All 191 trains are being assembled at Bombardier's Derby site.
Photo: Ben Elias