Turn right at the aero club roundabout towards Woolsington hall, at the and of the road cross the field to the red fence. Thats where the photo was taken, looks like the security hut is not manned yet although a guard was sitting in a car.
An NCP gadgy moved me after 2 hours saying that spotting was “not allowed”. I asked him to prove it and he couldnt but I went anyway. The road to the 26L threshold is now gated so I dont know if its OK to go down there anymore. Its a very “unspotting” place now!!