For expats bringing pets to the United Kingdom, specific vaccinations are mandatory to meet entry requirements. For expats, the most important requirement is a valid rabies vaccination, which must be given after the pet is microchipped and before travel. Expats in the UK should know that the rabies vaccine must be administered at least 21 days before entry to be considered valid. Dogs must also receive a tapeworm treatment from a certified veterinarian between 24 and 120 hours before arrival, although this requirement does not apply to cats. Expats in the UK are not required to vaccinate pets against other diseases for entry, but routine vaccinations such as distemper, parvovirus, and leptospirosis are strongly recommended for animal health. All vaccinations must be documented in an official animal health certificate or pet passport. Careful planning ensures expats can bring pets into the UK smoothly and without quarantine.