wrote


I thought that Chiltern as a rule called at only a limited number of
stops, including Harrow-on-the-Hill, Rickmansworth, Chorleywood, Chalfont
& Latimer and Amersham.

FYI, Chiltern trains operating on that section of the Metropolitan line
don't use AWS, but rather tripcocks.

IIRC BR trains ceased serving Moor Park around the time when the 165s were
introduced. Otherwise, Chiltern serve all Met Fast Line stations, i.e. those
where Chiltern trains pass a platform. Rickmansworth only gets a limited
peak service (AIUI this is a platform length issue), while about half the
peak service runs fast from Amersham to Marylebone (morning peak), or from
Marylebone to Amersham or Great Missenden (evening peak).

Peter