A romantic afternoon

Whilst I was passing out in front of a film about Finnish ski jumpers, Jason & other half drove to Cobham so that they could have a "'lovely walk by the River Mole'. It started off nice, then crossed through a field full of angry bulls, over a bridge crossing the M25 and back, then down a country lane towards Wisley (where the youths go to do their jump work). Anyway, about 3/4 of the way down this road there is a gate (smashed open) and various signs, one which says 'If you ride a motorcycle past this point, it will be seized and crushed' and another that says '24 hour CCTV surveillance'; and this is supposedly a public wood. So, we carry on down the road only to be faced with a third sign, in red and white, which reads 'DANGER Fox Mange'. We press on. We get to the bit where the jump work is participated in and are bordered by a ten foot high fence with razor wire on the top and all of a sudden the path just stops, so we have to scramble down a bramble-covered banking onto the A3 and walk for a mile along the side of a virtual motorway."
Fox mange??? Transmission ends.