Just been sent an e mail from Bykebitz. The weather being what it is it may be of interest to someone.
They have Daytona grips on offer at the moment. Normally £70 but if you enter the code "DAYHALF" when you check out they'll cost £35.
I've no idea if they're any good but at least they're cheap
DAYTONA WARM GRIPS 12V 7/8