http://www.lbscr.org/History/Circle/index.html

The Brighton Circle

Quote from their website:-

The Brighton Circle was formed in 1974 with the aim of collecting and publishing information on the London, Brighton and South Coast Railway Company and its constituents. It is the Circle's intention to cover all aspects of the Company's history and all members are encouraged to contribute as much information as possible so that a complete picture may be built up.