My vet was completely clueless when my cat and I moved over to the UK. But this was four years ago in the very early days of PETS. I didn't mind so much that she didn't know the rules and regulations, though, because she was really eager to learn. We were both constantly looking stuff up on the DEFRA site and printing things out. I was on the phone to her nearly every day and it was a big learning curve for both of us. She was really enthusiastic about it. As long as your vet is interested in doing the right thing by you and anxious to follow the correct procedures, I wouldn't worry too much if he/she doesn't know the ins and outs of it all straight away. Of course, a vet who's completely familar with PETS would be best, but that's not always possible.