Hmm i live in kent and cant think of any walkons held here! Probably the closest place to you would be Yorkies Tourney Park just over the Dartford crossing in Essex. Just do a search for tourney park on these forums. It depends what you want to play tho... if you want to train on supair then yorkies is probably the place to be. If you want to do a traditional walk on day then take Gibbseys advice and go to Campaign. Its an hour from Maidstone without delays on M25! Thay have lots of woodland/ concept fields and one big supair.