On Mon, 3 Sep 2007 22:07:59 +0100, Peter Smyth wrote:

All Metronet lines are now suspended, including parts of the Piccadilly
where it runs over such lines.

Anyone know why it is considered safe for Chiltern to run over the Metronet
maintained Amersham - Harrow section, but not safe for the Met to do the
same?

Presumably because Chiltern have enough non-RMT drivers to be able to
run the Aylesbury via Amersham service. They also run over a
non-Metronet route (the route via High Wycombe), so they can stick all
the RMT drivers on that one.