"Scots actor Robbie Coltrane. ie The guy who plays an English part in Harry Potter. "

Ah, that would be the Englishman Rubeus Hagrid, not to be confused with Rubeus Hagrid, the fictitious half-giant living in the grounds of a fictitious school for wizard and witches who has a dragon for a pet and speaks with a 'Mummerzet' accent, a county that doesn't appear on any real map of England.