Always park out of sight of the WG flat/house, when going back to your car always walk past it then double back to make sure no one if following you.
If you were worried about the camera, keep your head down and don't look at the camera.
Growing a pair of balls might help you 
Great advice, but spoilt a little by the last bit. Imho, the phrase there are old punters and bold punters, but no old, bold punters - equally applies to our hobby.
And i'd add to the above, NEVER park in the same street as the wgs.
Learnt this lesson the hard way. Came out of an extremely visible Rom brothel in Liverpool(they had xmas lights on at night, every night, to mark the place for gods sake.) to find a large shiny coach bolt screwed into the tread of my front tyre.
I'd walked around the block to reach my car because i was spooked by the raucous queue awaiting admittance - i didnt want these loud and leery fellow punters to clock what car i was driving. So instead of walking straight down the road to my car, approaching it from the back, and driving away - instead i came around the corner approaching it from the front and could see straight away the fat shiny new bolt in the front tyre.
After twisting it out, i drove away smartly only to see in the rear mirror a householder come rushing out from a house opposite my parked car - with a video camera stuck to his face. He brazenly stood in the middle of the road, his shirt sleeves flapping, filming my receding car. I think my approach from the 'wrong' direction had caught him off balance.
I did seriously consider going back to return the 'favour' of the bolt (he had 2 cars vulnerably parked in his garden) - but at my age i am well past those types of fun and games.
And sadly within six months the brothel closed for good. Guess the concerned citizens had collected enough video evidence by then. Pity, because i am pretty sure that the £60/hr brothel kept local pro$$ies prices down - even if the service often wasnt up to much.
Playing safe doesnt mean just wearing a rubber.
