Same as above,
The Elite Battlezone Use Lydd and Hythe sites which are cool. Although Hythe games are my prefered choice as Lydd is too far for me, They do games once a month I think.
and from what Ive seen from UCAP it looks pretty epic looking to go up there next month for a game and they host games at sandpit every other weekend.
Then you have Dover which you know about.
No idea the fequency on games from Ace or Apoc.