"Jamie Thompson" wrote in message
...

It's why I'd like to have the former widened lines as part of the SSL
system. Assuming connections made at Farringdon and Moorgate, give the
centre roads over to the Circles, and run the Mets on the outer lines.

It is known that connections can't be made at Moorgate without spending 100s
of millions though - the alterations to have a junction east of the
platforms involve adjacent building foundations - and there is basically no
way a business case would ever stand up.

Circles could be scheduled to simply bypass delayed units on these
sections. A similar arrangement could be instituted between Gloucester
Road and South Kensington (where it already kinda does, as the
westbound District and Circle are kept separate). Knock though the
bays at Mansion House and Tower Hill and you have another couple of
locations where you can do this as well. Maybe Aldgate too

By the time the SSR resignalling is complete in 2018, it is not intended to
have any Mansion House terminators, and the bay platform there is to be
taken over by the through route. However there is a plan to make Tower
Hill's central platform accessible from both directions...

Paul S