For shoes, including the three pairs of "spectators" (US) or "co-respondents" (UK) I highly recommend Adrian Herring, who posts worldwide and who commissions shoes from the best of the Northampton shoe manufacturers. www.herringshoes.co.uk
For traditionally styled clothing, including heavier weight flannel suits appropriate to a fedora-wearing, vintage look, try Pakeman, Catto and Carter at www.pakeman.co.uk Their suits go especially well in London with Christy hats from...
...you've guessed it, Hornets.
A nice range of accessories from Tails and the Unexpected (google it).
This probably doesn't add much to your already extensive knowledge, but I promised I would, so here's the post.
