The FTSE 100 closed down 4.11 points at 10,265.32 after recovering from a 1.1% drop, while the FTSE 250 slid 1.5% to 22,466.20, its sharpest fall in over six weeks. UK 30-year gilt yields hit 5.81%, the highest since 1998, as investors reacted to political turmoil and a weaker pound. Nearly 80 Labour MPs reportedly called for Prime Minister Keir Starmer to resign. Banks and housebuilders led the declines.