Below are links to some useful philatelic related sites:
The Federation of Surrey Philatelic Societies is the local federation to which Wimbledon belongs. Any member of the Wimbledon and District Philatelic Society is more than welcome to attend meetings of any other federation society. Members of any other Surrey Federation society are similarly most welcome to attend any and all Wimbledon meetings..
The Association of British Philatelic Societies (ABPS) is the national organisation catering for the needs of collectors through the Federations and local societies and those interested in philately.
The Great Britain Philatelic Society since it was founded in 1955 has grown steadily, and now has more than 700 members in the UK and abroad. The Society deals with all aspects of GB philately, and has contributed much to the field. It is a "must join" society for any GB collector.
The Royal Philatelic Society, London or simply "The Royal" is the oldest philatelic society in the world having been formed in 1869 (as The Philatelic Society, London, and gaining "Royal" patronage in 1906). The society has some 2000 members with roughly 900 of these in the UK. The society deals with philately from all countries and periods, has an extensive library, archive of philatelic records and material and is home to the RPSL Expert Committee.