Planning an international move with your pet? PetAir UK is one of the most highly regarded pet relocation services in the UK, with over 33,000 successful relocations to more than 300 destinations worldwide. What sets them apart is their vet-led approach — founded and run by veterinary surgeons, every journey is overseen by animal health professionals, not just logistics handlers. As British Airways' preferred pet travel partner and DEFRA-approved, PetAir covers everything from custom-built travel crates and full paperwork compliance to door-to-airport transport and 24/7 vet access. They even offer a price match guarantee and flexible payment plans. Rated 4.8/5 on Trustpilot with over 860 reviews. A strong option for expats relocating to or from Spain who want a thorough, clinically-led service with no hidden fees.