Joe ____'s plays include Loot and Entertaining Mr Sloane (5)

I believe the answer is:
orton
(Other definitions for orton that I've seen before include "British dramatist Joe, noted for black comedies" , "Joe -, Eng. dramatist" , "Joe -, dramatist (Entertaining Mr Sloane)" , "Controversial playwright" , "Joe ---, Loot playwright" .)