Most units of rolling stock last around 40 years. Major refurbishment can prolong life by another 10-15 years and is much cheaper than buying a new train.

Trains currently in service

'S' stock

  • S8 runs on the Metropolitan line
  • S7 runs on the Circle, Hammersmith & City, and District lines
  • The first walk-through gangway train on the Tube - the inside of the train is one continuous length, providing improved capacity, security and passenger flow
  • Fully air conditioned
  • S7 has 7 carriages, 256 seats per train and a total passenger capacity of 951
  • S8 has 8 carriages, 306 seats per train and a total passenger capacity of 1,044

2009 stock

  • Runs on the Victoria line
  • Introduced in 2011
  • Doors electronically detect objects and prevent the doors closing
  • Faster journey times thanks to automatic train protection and operation
  • 324 seats per train
  • Total passenger capacity per train - 864

1996 stock

  • Runs on the Jubilee line
  • Introduced in 1996 as part of the Jubilee line extension project
  • 234 seats per train
  • Total passenger capacity per train - 817

1995 stock

  • Runs on the Northern line
  • Introduced in 1995
  • Usually operated by one person, so their introduction saw the withdrawal of guards on the Northern line
  • 268 seats per train
  • Total passenger capacity per train - 665

1992 stock

  • Runs on the Central and Waterloo & City lines
  • Introduced in 1992
  • The twin sliding doors, plus one single door at each end of each car, are wider than any used previously on the Tube
  • 272 seats per train
  • Total passenger capacity per train - 892

1973 stock

  • Runs on the Piccadilly line
  • Introduced in 1975
  • Built to cater for airline passengers travelling with luggage between central London and Heathrow. Extra floor space provided by longer carriages and larger vestibules than its predecessor
  • 272 seats per train
  • Total passenger capacity per train - 684

1972 stock

  • Runs on the Bakerloo line
  • Introduced in 1972
  • 264 seats per train
  • Total passenger capacity per train - 730