In message -
september.org, at 17:06:28 on Sun, 11 Jan 2015, Recliner
remarked:
But LO trains have very relaxed schedules, and often wait longer than
necessary at stops, thus helping achieve their very good punctuality. LU
trains, with their lack of published schedules, don't have to do this.

Actually, they do have a timetable, it's just that they don't make a song
and dance about it to the public.

eg: https://www.tfl.gov.uk/cdn/static/cm...tropolitan.pdf
--
Roland Perry