Not sure if anyone else has this issue but talk about frustrating i mean like seriously frustrating.

The seems to be a clunk/knocking sound in the boot which sounds like its coming from the top of the rear window.

I know i need a plastic bracket/clip for the parcel shelf but its almost as if one of the hinges is knackered. I've taken off the trim around the boot lining, cleared the boot out and still no joy but the odd thing is it only rattles and makes a noise when its cold weather. Strange i know but its bizarre. Even got the missus to drive whilst i sit in the back and i just cant pin point where its coming from?

Anyone else have this issue or have any suggestions what it could be?

Thanks