I have been asked to fit a towbar to above vehicle (not something I do very often but it is an old customer), However I cannot see how to remove the plastic rear bumper. There seems to be something along the top rear part that is preventing it from coming free but there do not appear to be any visible fastnings to account for this.

If you squeeze your fingers into the narrow gap between the top edge of the bumper and the tailgate surround it is just possible to make out a couple of TX headed screws but there is no way I can see of bringing any tool to bear on them so I am hoping that these are not the problem.

Anybody been here before? How did you remove the bumper??

(PS Is there a loom conector anywhere for wiring up the towbar that I will be able to connect to (I have seen this before on some cars) or is it just a case of splicing in where appropriate)