I noticed today that they've redesigned the Met line diagrams to try
and show (for the first time?) the way the service actually works -
i.e. a loop between Finchley Rd and Wembley Park (marked 'Fast and
semi-fast trains) and effectively 3 separate lines after Harrow (the
Uxbridge branch, then one with all the stops marked to Watford, then
the Amersham/Chesham branch with only the relevant stops shown). It
looks a little bit messy but probably makes more sense...