In the UK there is a dangerous dogs act of 1991
https://en.wikipedia.org/wiki/Dangerous_Dogs_Act_1991
Under the 1991 Act (and as amended in 1997) it is illegal to own any Specially Controlled Dogs without specific exemption from a court. The dogs have to be muzzled and kept on a lead in public, they must be registered and insured, neutered, tattooed and receive microchip implants. The Act also bans the breeding, sale and exchange of these dogs, even if they are on the Index of Exempted Dogs.[1]
Four types in particular were identified by the Act:
Pit Bull Terrier (The English Staffordshire Bull Terrier is not on the list)
Japanese Tosa
Dogo Argentino
Fila Brasileiro
The Act also covers cross breeds of the above four types of dog. Dangerous dogs are classified by "type", not by breed label. This means that whether a dog is prohibited under the Act will depend on a judgement about its physical characteristics, and whether they match the description of a prohibited "type". This assessment of the physical characteristics is made by a court.