On Mon, 29 Dec 2003 22:51:50 -0000, "Sharon & Gordon Thomson"
wrote:

Have situations ever arisen on London Underground where major service
disruption has resulted from a track problem or derailment occurring at a
critical location at/near a depot such as to prevent lots of trains from
entering service?

Yes - signal problems at Seven Sisters only yesterday meant a very
restricted run out of the depot. Although it's a Saturday service there
were very big gaps in the service for the first hour or so.

On other days Seven Sisters has had problems. The other big area of risk
is if weekend engineering works don't finish on time thus trapping the
trains in the depot. Neasden has had a few of these thus wrecking the
Met and Jubilee line services.
--
Paul C


Admits to working for London Underground!