Dado blades are illegal in the UK and most parts of Europe. Dado blades were made illegal in the UK because they were deemed unsafe for use. If you want to use a dado blade UK table saws, you will have to remove the riving knife and guard, which makes it unsafe. All tables saws made in the UK and some parts of Europe are fitted with arbors on purpose to prevent you from using dado blades. Although, if you need a dado blade for your private use, then you will have to import a table saw from the US.