Ministers Urge Starmer To Sack Source Behind Anonymous Leadership Briefings. Prime Minister Sir Keir Starmer is under growing pressure from his own ministers to sack whoever was behind anonymous briefings claiming he faces a leadership challenge. The calls come after reports suggested Energy Secretary Ed Miliband and Health Secretary Wes Streeting were potential rivals — both of whom have now demanded action. Starmer, said to be “incandescent” over the leaks, has apologised to Streeting personally. The controversy has intensified scrutiny of Morgan McSweeney, Starmer’s powerful chief of staff, who some in government blame for both the briefings and the culture inside No 10. One ally told the BBC: “Morgan is a proxy for Keir. They’re coming for Morgan because they want to get Keir.” While neither Miliband nor Streeting has publicly criticised McSweeney, Streeting notably praised his role in Labour’s general election victory, signalling a desire to de-escalate tensions inside the party. Instructions: THIS VIDEO MUST NOT BE EDITED FOR LENGTH TO COMBINE WITH OTHER CONTENT