Pet Welfare During Transit
Pet animal are also covered by Regulation (EC) 1/2005 - see commercial animal transport
This guidance is intended to assist carriers (e.g. ferry operators, airlines, railway companies) to care for and protect the welfare of pet animals during journeys to and from Great Britain. Although primarily directed at carriers accepting passengers who are transporting pet animals (dogs and cats) under the 'Pet Travel Scheme' (PETS), the principles apply to the transport of any pet dog or cat on other journeys.
A separate document is available with advice for pet owners.
More information available on the Pet Passport Scheme pages.