The FTSE 100 rallied on Wednesday, led by mining stocks, while gilts steadied as Prime Minister Sir Keir Starmer kept a precarious grip on power. The FTSE 100 closed up 60.03 points, 0.6%, at 10,325.35. The FTSE 250 ended up 62.17 points, 0.3%, at 22,528.37, and the AIM All-Share rose 6.55 points, 0.8%, at 817.21. In London, reports suggested Health Secretary Wes Streeting plans to step down and could mount a formal challenge to Sir Keir on Thursday. Mr Streeting confronted his party leader over the crisis engulfing Labour as the pair met for crunch talks – which lasted less than 20 minutes – in Downing Street ahead of the King’s Speech. According to various reports, Mr Streeting has told allies he is preparing to quit government on Thursday and run for the top job. The pound nudged up to 1.3520 US dollars on Wednesday afternoon from 1.3505 dollars on Tuesday. Against the euro, sterling was higher at 1.1542 euros from 1.1517 euros on Tuesday.…