On Tue, 15 Apr 2008 20:51:00 +0100, Tom Anderson
wrote:

On Tue, 15 Apr 2008, Clive D. W. Feather wrote:

In article , Tom
Anderson writes
Very. For example, it would be useful to have platforms on either the
Met. or the Chiltern lines at West Hampstead to allow a connection to
Thameslink and the NLL, but there isn't even the room to do that.

There may not be space to add bank platforms [1] outside the Met
tracks, but isn't there space to rebuild the station as a pair of
islands between the Met and Jubilee pairs?

No.

Presumably, because platforms half the width of the existing platform,
which is what there'd be space for, wouldn't be allowed?

Probably the best you could manage is something like this:

---------------------------------
---------------------------------
---------------------------------
--\ ######## /-------------------
\--------/ /--------\
---------------/ ######## \------
---------------------------------

Ooh, i like that. You could add another island further to the left for the
Chiltern lines!

Any reason you've drawn it upside-down?

There is possibly more room available at West Hampstead than is
apparent at first sight. The GC lines used to have platforms, the
odd-looking doorway at the back of one of the shops is the access from
what was the station building so that side might not need a lot
alteration of premises in Broadhurst Gardens to put in a new platform
(but not necessarily so for the gap between the Up GC and the Down
Met). On the other side, if nothing new has been built in the last few
years then there is room for expansion to the north without knocking
down too much. As for the station building it is IIRC one of a number
built to a similar design so not desperately in need of preservation
but past modernisation elsewhere seems to have been achieved without
too much alteration to the outward appearance anyway. If the road
bridge is still as inadequate WRT to weight-carrying as it was a few
years ago then this would also be an opportunity/excuse to replace it
and increase the available width of the railway formation below.