Not sure about the UK law, but where they've tried this in the US the powers that be really don't know the difference, and the dogs get generically lumped together. The headline of this article suggests the UK doesn't do much better, and I'm guessing their breed banners aren't any brighter than ours.
Most people don’t realise that the name “Pit bull” applies to 3 different breeds, with the English Staffordshire bull terrier being a miniature of the other two.