[Symbiote]

Only on the newest part of the newest line, the Jubilee Line Extension. (1999? something like that.)

There are no "platform edge curtain" doors on other lines, even though many other lines also have computer controlled trains. (The "driver" is still there to press a button to start the train, but many lines almost drive themselves.) Although, even on the fully manual lines, the driver is expected to stop the train precisely -- the platforms aren't long enough for inaccuracy.