It might be best described as the war for Keir Starmer’s ear in Downing Street, a battle to the bitter end between two of the Prime Minister’s most senior advisers. There was, in reality, only going to be one winner, and so it has come to pass. Morgan McSweeney, Keir Starmer’s chief adviser and architect of Labour’s massive general election victory this summer, has been anointed as the PM’s new all-powerful chief of staff.