Tim Roll-Pickering wrote:
Graham J wrote:

However a simplified overview of the problem is that heading
towards London Bridge

While true, isn't there also a problem at Farringdon because of the
time it takes to switch from overhead to track power supplies?

Shoudn't be. It takes only a few seconds, and at Farringdon should not
extend the normal dwell time in the platform.
--
Richard J.
(to e-mail me, swap uk and yon in address)