Feldman then became the chief writer and script editor on The Frost Report (1966–67). With John Law, he co-wrote the much-shown "Class" sketch, in which John Cleese, Ronnie Barker and Ronnie Corbett faced the audience, with their descending order of height, suggesting their relative social status as upper class (Cleese), middle class (Barker) and working class (Corbett).
Feldman then became the chief writer and script editor on The Frost Report (1966–67). With John Law, he co-wrote the much-shown "Class" sketch in which John Cleese, Ronnie Barker and Ronnie Corbett faced the audience, with their descending order of height, suggesting their relative social status as upper class (Cleese), middle class (Barker) and working class (Corbett).