In message , at 15:23:05 on
Tue, 18 Dec 2007, Peter Masson remarked:
The only real advantage of having island platforms at SPILL will be if
trains arrive off the Midland and Great Northern Lines together they will be
able to unload either side of the island, instead of one having to wait
outside.

It also makes journeys *through* London easier to do. Swapping between a
hypothetical Bedford-Brighton train and a Cambridge-Dartford train.
--
Roland Perry