They certainly are. Assuming they have kept the info up to date you should be able to find them and contact details via this link. Just zoom in to the area north of Rye and click on the blue flag.
Biggles
Apologies, but while there is information (location and a phone number) about the club on that link, it looks like the club web site has changed. I could not find an alternate - google search failed to turn one up.
Rapid MkII .22, AA400C .177, AA MPR .177, AA Prosport .177, AA TX200, AA FTP900, HW75 .177, HW45 Silver Star .22, and my dear ol' Webley Ranger .177 (circa 1966) Mile Oak - WEB SITE Air Arms HFT Team member