Well, I'm a vet student so mostly I use myself
or the university small animal practice in Langford when there's something I can't handle myself or I need help.
Of the "normal" practices in Bristol (there are so many!!) the one I've heard most positive things about with relation to small furries is Avenue. I know Vale is a huge group with lots of vets and branches, is there a particular vet there that you like?
One I would say to avoid is Rivervale, it's only a small place, I know the vet there and he is not good on small animals.
Hope Fudge continues to get better