Labour backbench MP Catherine West says she is pressing Cabinet ministers to challenge Prime Minister Keir Starmer’s leadership by Monday. In interviews and media appearances, West argues that if no senior figure comes forward to initiate a leadership change within that deadline, she will move to trigger a formal Labour leadership contest. West’s plan centres on securing the required level of support from Labour MPs for a leadership bid, which would involve seeking signatures to take the matter to the party’s chair. Other Labour figures, including Transport Secretary Bridget Phillipson, publicly resist the idea of a leadership contest and warn against intra-party infighting. Reporting also indicates West’s position evolves: after initially announcing that she would seek the necessary names and potentially force the process, she later said she wants Starmer to set out a timetable for leaving by September rather than immediately pursuing a takeover herself. Across coverage, the immediate political question is whether any Cabinet member will challenge Starmer before Monday and what effect West’s statements have on Labour MPs’ willingness to back a formal contest.