We used animal couriers
www.animalcouriers.com - We didn't get a quote from Golden Arrow since they're so far from us, but Airpets were a few hundred pounds more than what we ended up paying. Animal Couriers were
really great from start to finish, providing friendly, personal service, lots of info on the various tests etc and they provided us with a timetable of exactly what to do when at our vets. In addition they boarded our dog with them at home for a week, rather than in their kennels (which we would have been happy with, but this was much better!) They're off the M25 so handy for Heathrow/Gatwick.