Changing Brake Light Bulbs Series1 Rs4

[airbox]

one of my brake lights on rear corner, not the tailgate ones, has blown. How the hell do you get the light cluster off? I have removed the two bolts that are accessed once the tailgate is opened but it just wont come off and I dont want to exert any more force on it as I think I'll break it. Do you have to remove the inside trim and access anything from that way?

[airbox]

just read the DIY thread and apparently you have to remove the carpet sides in the boot and undo 2 more nuts from the inside. These must be the outside edge ones that I thought were the ball and socket type that just push together. Stupid idea I think, ball and socket would be much better, wonder if there is a way of fitting some.