Four Lines Modernisation

[1][2] Following the implementation of the London Underground Public Private Partnership (PPP) in 2003, the Metronet consortium became responsible for the infrastructure on the District, Circle, Hammersmith & City and Metropolitan lines.

[3] As part of the PPP, Metronet would deliver 190 new trains built by Bombardier Transportation and install new automatic signalling from Westinghouse Rail Systems.

In July 2007, Metronet, the private consortium responsible for the infrastructure for the sub-surfaces lines, collapsed due to financial difficulties.

New features that were not used on the previous rolling stocks include air-conditioning, low floors to ease accessibility, and open gangways between carriages.

† For various reasons including funding and the technical difficulties with sharing tracks with National Rail & the Piccadilly line, SMAs 10-12 were scaled back until further notice.

D78 Stock on its last day in service (right), next to its replacement, an S7 Stock unit (left).