Sadly the rattle in the sunroof has returned and is just as bad as it was before I applied the silicone grease
It's going in for a service next month so I'll ask them to investigate. Its very annoying! Let's hope they don't make it worse!
I've had my rattle removed today. They fitted a new clip and driver's side sun visor and installed some additional soundproofing around the area, now it's whisper quiet.
Are you sure it's the sunroof? I initially thought it was, but after applying all the silicone lube etc it was still there. I noticed that if I close the driver's door, you could hear a metallic vibration when the door closed. Also where the driver's sun visor clips in, try to move that little clip up and down and see if you hear the rattle.