Also known as a Pit Bull.
Staffordshire bull terriers are not pit bulls. They are smaller, though related (in so much as Boston terriers, Boxers, and bulldogs are related) dogs that are NOT banned in the UK, and not considered pit bulls there either. American Staffordshire Terriers are considered pit bulls, but they outweigh Staffy Bulls by quite a bit, and can be dual registered as American Pit Bull Terriers in the UKC.