Andy Burnham addressed Labour MPs for the first time in a significant new capacity, pledging to be "accountable" as he sets out his approach to the parliamentary party. The appearance carries weight given his prominence within Labour and speculation about his standing in the party, making his tone and message to backbenchers closely watched.

Former prime minister Tony Blair reportedly cautioned Burnham that "you're not going to be loved" in the role, a blunt warning about the political and personal costs of leadership. The article, as provided, does not include further detail beyond the headline exchange between the two figures.