On 21/01/2016 16:35, Recliner wrote:
Someone Somewhere wrote:


What you'd need is trains continuing along tunnels through London
stopping at appropriate interchange points before ending up in some
giant stabling yard on the opposite side of London from where they
started and then reverse the process in the evening.

Sort of like Thameslink, Crossrail and CR2...

Indeed - but you'd need it for many more of the suburban lines.

It would be a hugely expensive solution, but it would work (but never
happen)