Please let's not go too deep into the 'dado blade UK' discussion. I've heard it many times before.
In the UK alot of people don't appove of dado blades or even un-guarded saws.
I personally don't mind too much. But all I know is were not allowed to have dado blades on our saws. Alot of our saws are less powerful than yours in the USA ( ) And also they are deliberatley built to not accept dado blades.