Been to apocalypse twice, second time for a night game. It was very cool experience. It also put me off tracer units as they make a lovely target to shoot at in the dark 
Airsoft Forums UK
AirsoftTed
Apocalypse looks right up my street it's exactly the kind of site I've been looking for! Can't believe its only half an hour away from me! Will be down there the minute I get my m4 spring changed
Billericay Airsoft - 40 minutes-ish from A20
Both are great woodland sites.. especially Apocalypse with their trench and new layout of the airfield!