Your best bet would be to turn up to a site mate and just play we london impact train at Basildon and are there on sunday ? come and and say hello there willl be other teams there too.
Royston Apocolpyse have 2-3 sup-air teams and a dedicated training field. I know they are all ways looking ti fill the ranks with new players. i think they have a team for each dvision but i might be talking rubbish! contact Automag on this forum for more info
We have a couple of sup-air teams at Apoc (Royston) but it might be a bit of a trek for you. Basildon would be closer to you. Give Scott a pm and he will let you know what times they train.