On 25 Sep, 11:30, Tom Anderson wrote:
True. How much demand is there for trips from north of Golders Green to
south of Clapham? Not a lot, i'd have thought.

Also, having got my head around the history of the Northern line, i'm
starting to think it was the 1930s extension from Archway up the old LNER
line to High Barnet that had the long platforms, not the 1920s bits. That
would mean that there wasn't a nine-car region in south London. In the
absence of an overlap scheme like yours (which would involve drivers
stopping trains with their cabs two cars into the tunnel!), all this could
have done is brought people from the northern suburbs down to Highgate.
Perhaps the idea was that a lot of people would want to transfer there to
the surface railway trains to Finsbury Park, which i think were still
going at that point.

You're right that it was the Archway to Barnet extension that had long
platforms. But there *was* some kind of crazy skip-stop overlap
arrangement planned, I think with the driver stopping 2 car lengths
beyond the station at Tottenham Court Rd - it's covered in Rails
Through The Clay, and I'll look it up next time I'm home and have time
(unless someone else beats me to it).

--
John Band
john at johnband dot org
www.johnband.org