Rear 12V point

[Professor Peach]

Folks - during this weekend, the rear 12V socket (cigarette lighter) stopped working. I assumed that I'd somehow managed to blow the fuse, so I swapped it with the front one and have confirmed the fuse to be fine. So, what else is it likely to be? I'll have a look at it over next weekend, but if there are any suggestions where to start it'd be appreciated.

On a side note, that may or may not be connected, the rear courtesy lights have started flashing on and off a little when they're supposed to be on. A little knock on the assembly brings it back briefly, but i obviously have a dodgy connection up there.

Cheers