the by swindon off the A420 oxford rd you mean well i went there several times last
year andsaw nothing i also tried the cars parks around uffington for abingdon culham its dead its a no go best try wiltshire just off M4 not far from chipping sodbury its supposed to be premier site let me know if you see anything i went 5 times but it seemed to be quiet but there was afew cpls about but mainly guys sadly goodluck