Just found this out. I'm totally fucking gutted.

From their website:
tragic death announcement
The sudden and tragic death of Wiz (Darren Brown) has been announced.

Wiz died in hospital on 6th Dec 2007. His closest friends and family were with him.

Wiz was dearly loved by all his friends and family. He was a greatly respected and extraordinary musician and writer who touched the lives of many.

He will be deeply missed.