Northampton

Salcey Forest picnic area and the surrounding car-parks. Leave the M1 at A508 and head west. Take the little road on the left straight after the Motorway junction. Follow this road a mile or so to a 'T' junction. Turn right, and the forest is about two miles away on your left. It doesn't close at night, it's not lit and it's pretty well secluded, about five miles from Northampton town itself. Various couples both in and out of cars, within acres of woodland - some gay action too.