Johnny Mercer had mocked 25-year-old Keir Mather’s lack of real-world experience after he won the Selby and Ainsty byelection

Sir Keir Starmer has called the government minister Johnny Mercer a “silly sod” who will “soon be history” in politics after he compared Labour’s new 25-year-old MP to a character from the teen sitcom The Inbetweeners.

The minister for veterans’ affairs said Keir Mather had been “dropped into” the Selby and Ainsty constituency and was an “identikit Labour politician”. Earlier he had said: “[Parliament] mustn’t become a repeat of The Inbetweeners.”