There are a few exemptions to the law on tail docking. For example, it is legal to dock the tails of certain working dogs, such as foxhounds and beagles, provided that this is done by a veterinary surgeon and for a legitimate functional purpose, such as to prevent the dog from being injured while working. It is also legal to dock the tails of puppies within a few days of birth if it is done by a veterinarian and for a medical reason.
The law on tail docking is strictly enforced in England, and anyone who is found guilty of docking a dog's tail illegally can be fined up to £20,000 and/or sentenced to six months in prison.