On Sat, 26 Jun 2010 10:21:39 -0700 (PDT), E27002
wrote:

On Jun 26, 10:08*am, RPM wrote:
.
Chiltern services can only use the fast lines and unlike the fast Met
services they do not stop at Moor Park.

Is that a recent change? ISTR that in earlier days, North of Harrow,
BR trains, for the most part, stopped at the same stations as
Metropolitan Line fasts.

Which "earlier days" ? Before the 1960s there was only one pair of
tracks from Harrow to Moor Park and BR trains did not stop at
intermediate stations.