UPDATE - London branch
I believe, that the lads trying to get something up and running in Outer London have agreed to start off with 1 London branch and take it from there.
We are going to have an inaugural meeting (I've got a pub "function room" near Liverpool Street that can hold at least 50), that Graham Smith will come down and chair, so we're waiting on his availability - watch this space.
MODS - can I start a separate SOS London branch thread in due course ?