"West Yorkshire Bus" wrote in
message

Does anyone know what frequencies are scheduled to operate on each
London Underground line, off peak, and where the various services
terminate at each end with scheduled short journeys etc

I've come across a few websites and info on Wikipedia for some lines
but they all seem to contradict themselves and are often many years
old

Can anyone help with this?

One way to work it out is to use the TfL journey Planner:
http://journeyplanner.tfl.gov.uk/user/XSLT_TRIP_REQUEST2?language=en

Just give it any pair of stations and time to see the timetable of
trains between them.