http://www.yell.com/ucs/UcsSearchAct...438&ooa=on

Results Of Musical Instrument & Music Shops in WC2 (Charring Cross Road, Denmark Street etc) on Yell.com...

Afraid I cant remember which ones did second hand gear, if your nearby then have a nose (just leave visa cards and cheque book at home!!! ;) )if its a trek Id give em all a quick ring first...