There is a Lomo shop & gallery at:
37 Rosebery Avenue
London
EC1R 4SH
Tel: 020 7837 8835
They are open Tuesday-Saturday 11-6.
Lomos may be bought there for £89 (inc. VAT) or £94 by mail.
For more details have a look at the Lomographic Society site, which was reviewed in Amateur Photographer 13 Dec 97 pp14-16. Or...
Under Construction (awaiting Lomoscans)