West London Chess Club

Chess Associations

English Chess Federation (formerly the BCF)
The International Chess Federation (FIDE)
Braille Chess Association (British)

Chess Leagues

Middlesex Chess League
London Chess League

Internet Chess

Chess Cube (promoted by the ECF)
Free Internet Chess Server
Internet Chess Club

Chess Shops

British Chess Magazine Chess Shop
The London Chess Center (Shop)
Regency Chess
Big Game Hunter's Giant Chess Sets

UK Clubs

Hackney Chess Club
Harrow Chess Club
Streatham & Brixton Chess Club

Other

Venues for away matches
WLCC Web Server Statistics

See chessgames.com for a Masters games database (including Mark's games), kibitzing, a basic introduction to openings and daily puzzle.