Sunday 21 December 2008 10.38am
Very few "underground" vaults in SE1, unless you go for the crypt of a church like St George the Martyr
(not sure if the renovation is finished, but I think they have destroyed any character that it had as well as half the underlying archaeology in lowering the floor of the crypt)
There are plenty of railway arches. The problem is that with the rapid regneration/gentrification of the area, Spacia who manage most of them are looking for well-heeled commercial tenants, and have been waterproofing/recladding them to make them less vault-like.
Post credit-crunch they might have a few on which renovation has been indefinitely postponed.