"Nigel " wrote in message
...
Can anyone please tell me - Is the Watford Curve ever used from the
Rickmansworth end, this is the curve with the short tunnel, are
trains
ever run from Amersham to Watford, or vive versa?


Yeah.

Looking at the "first/last times" info for the Met on the Tube
website, Mon-Sat there is a train at 5:19 from Chesham that runs to
Watford, arriving at 5:45.
There may be some more slightly later on.
Plus, at the end of the day, there is a train from Watford at 0050 to
Rickmansworth, 0058.

There are also some early on Sunday.

http://tube.tfl.gov.uk/content/first...tropolitan.pdf