On 11 Feb, 18:50, "Paul Scott" wrote:
Following consultation, Chesham and Amersham will each have 2 tph off peak,
presumably following S stock being fully introduced on the Met:

http://www.tfl.gov.uk/corporate/medi...tre/11185.aspx


Thanks for the heads up. The changes are explained in simple terms
further down in the aforementioned press release...

---quote---
Changes to services

The changes, which would not affect the current peak-time services,
are as follows:

* Two trains per hour running direct between Chesham and central
London throughout the day. Customers would no longer need to change at
Chalfont & Latimer

* Two Metropolitan line trains per hour between Amersham and central
London, instead of the present four. The two trains per hour service
provided by Chiltern Trains (one train per hour on Sundays) would be
unaffected, so the total number of trains from Amersham to central
London would fall from six to four per hour (and from five trains to
three per hour on Sundays)
---/quote---


So a bit less turn up and go at Amersham then, and *if* Amersham/
Chesham/ Chiltern trains are to run every ten minutes (similar to the
current timetable) then Amersham passengers might have up to a 20
minute wait for the next train.

Obviously those returning to Amersham from central London will have to
deal with the fact that their next direct train will depart from
either Baker Street or Marylebone. I suppose this could be abated
somewhat by providing better information at Harrow on the Hill for
Amersham bound passengers so they know which platform to go for their
next Amersham train (i.e. for a Met line or Chiltern train), though I
guess some pax would just head to Chalfont & Latimer and change there.

This does all rather presume that Chiltern will keep stopping between
Amersham and Rickmansworth and at Harrow on the Hill - are they
obliged to do so under the agreement with LU? There are already two
(morning) up and one (evening) down Chiltern trains that don't stop at
Amersham - though I understand they do actually pass through slowly
(for a trip-cock test?). This could be taken as suggesting a
begrudging attitude by Chiltern in serving Met line stations, though
I'd think it's just a sensible approach with regards to busy peak time
services.

By the by, the PDF of the Chiltern timetable is here, with Aylesbury -
Amersham - HotH - Marylebone services are on pages 74-77:
http://www.chilternrailways.co.uk/uploads/publications/1073.pdf