I think this is the camp site I mentioned above (sign posted off the A20):-
Thriftwood Caravan Park, Plaxdale Green Rd, Stansted,
Nr Wrotham.Tel: 01732 822261
http://www.streetmap.co.uk/newmap.sr...tansted,+Kent+[Town]&searchp=newsearch.srf&mapp=newmap.srf
I'd say it's about 10 mins from the circuit. Give 'em a call though as I don't know anything about them.