Wes Streeting, the UK Health Secretary, is reportedly planning to resign from his cabinet position and launch a leadership challenge against Prime Minister Keir Starmer. Allies of Streeting indicated he could quit this week, aiming to trigger a contest that requires the backing of 81 Labour Members of Parliament. In response, Starmer's allies suggest he would likely stand against Streeting if the challenge materializes. Meanwhile, the UK financial markets reacted with a drop in gilts and the pound, while the UK 10-year yield remained steady at 5.10%. Streeting's spokesperson did not deny the resignation plans but refrained from commenting further, focusing instead on the government's health policy announcements. Additionally, there are indications that the soft-left faction of the Labour Party might consider proposing alternative candidates, including former deputy premier Angela Rayner or Energy Secretary Ed Miliband.