Hi Rory
Welcome aboard from another recent arrival based in North Somerset.
I'm in St Georges, Weston super Mare (just next to Junct 21). Local site I am a member of is www.blackopscribbs.co.uk who run skirmishes every other Sunday. It's the closest one, just off Junct 17 near Cribbs Causeway. An ex-MOD site with a good mix of open ground with cover, bushy areas, buildings, vehicles etc. Good marshalls too with some imaginative scenarios as well as some regular scenarios.
Also close (Brockley woods, near the airport) is Spartan. A good woodland site with a small constructed village, a few vehicles etc and well run games.
Local teams are:
Team Centaur (I just joined) find us on facebook
Maverick Airsoft Company (really nice bunch who helped me as a newb and let me play alongside them etc) also find on FB
13th Airsoft Platoon (FB again)
Silent Ghosts (You guessed it...)
I'm sure there are more, but these spring to mind.
There's also a Weston super Mare Airsoft FB group who arrange meets at local games etc.
Hope that helps and hope to catch up with you soon.
I'm up at Black Ops Cribbs whenever I can, but with real life commitments this is usually once every 4-6 weeks or so.