What time do the London Tubes stop running on a saturday night. I need to get from the South Bank to Perivale

Answer 1

The last train arives at Perivale at 00:58. It leaves Bond Street at 00:34
You will need to catch a Jubilee Line train from either Waterloo or Westminster at least 10 minutes before that. I would aim to get to on a train by 00:15 if you want to catch the last Central Line train

Answer 2

It varies between lines. Check Transport for London's journey planner at http://journeyplanner.tfl.gov.uk/