Hey, I don't have a dog but I've been raw feeding my 3 cats since January. Raw is great for cats too, after all, they are obligate carnivores and are not able to process carbohydrates. The mainstream feeding of grain-based dry food to cats, endorsed by vets, is nothing short of a scandal. Anyway, without getting into all that, I get some of the pre-ground mixes from Donna at Real Pet Grub at Hillsbro, and I get frozen mice from the Lizard Lounge on Holme Lane (opposite). Yes, whole prey is the absolute best you can do for your cat, if you can stomach it. I know some people who feed rats and baby chicks too (can't go there myself, although the cats would love it).
A great online supplier of raw pet foods is Woldsway in Lincs: woldsway.co.uk
Rabbit, beef, chicken, offals, etc.