6 Series coupe - rear shelf rattle!

[Lordvader]

This is starting to drive me nuts.

I have got a very random high pitched rattle coming from somewhere near/under the rear shelf of my F13 coupe.

Don't always happen so very hard to take into the dealership (UK) and get them to look at it (under a year old)

Can the rear speakers in the shelf be removed? I take it removing the whole rear shelf would be tricky and i cant see any simple way of doing it.