I wonder if anyone can help with a definitive answer (a lot to ask I know since the goalposts seem to be constantly moving!). We live in Spain and have an EU Pet Passport. My question is does it make a difference whether your pet has an annual rabies booster or a biennial one? My vet here told me yesterday that Britain requires an annual booster. I thought that the EU pet passport was valid for UK entry with whatever vaccination regime the issuing country follows?