Does anyone know where I can get a fitted vet bed or similar for my dogs
hard plastic dog beds, I would like something that goes up the sides if possible.

try www.profleece.co.uk, weve just bought some polyester fur for our bitch and she loves it, keeps her nice and warm and draws moisture staright to bottom, can be machine washed.  Excellent prices but not sure if they have any that will cover the sides.