Stick it on a pole to go up 8ft maybe, then across the walkway? He could even just have the pole locate in a pocket when in use, pull out and lie down out of the way and have a junction at the base - then pull the cable back up again to the flat.Thanks all, I'll pass info on.
He told me that he can run a cable down the fence but hes not allowed to go across the walkway between the flat and fence! Not allowed to dig their path up.
I did suggest having a plug on the cable and just plugging it in when in use but he can't do that either!