Hi Tim,It's the Sealskinz ultra grip gloves that I use, I see they do a hi viz version also....
Window cleaning waterproof and neoprene gloves from Unger and Sealskinz
Do these even cope well in sub-zero temperatures? My current gloves are fine down to about 5 degrees but go much below that and I suffer especially when there's a chilly breeze. It might still be a few weeks before I can get to the shops - so I may end up having to order something on-line.