UK Prime Minister Keir Starmer said he would resign on Monday, ending a premiership of just under two years and setting Britain on course for its seventh prime minister in a decade. For markets, the announcement was not a bolt from the blue. Pressure on Starmer had been building for months, and Andy Burnham’s return to Westminster had already pushed investors to price in a change at the top. The sharper story was the split reaction: sterling weakened, gilts stayed under pressure, and the FTSE 10