Braintree Chess Club
Clacton Chess Club
Chelmsford Chess Club (didn't seem to work properly in Mozilla / Netscape)
Customs Chess Club (Southend)
Essex Chess Association
Ilford Chess Club
North Essex Chess League
Rayleigh Chess Club
Southend Chess Club
Southern Counties' Chess Union
British Chess Federation
Free Internet Chess Server (play chess online)
Brian Stephenson's Chess Problems Website
Four Nations Chess League (Britain's National League)
British Chess Problem Society