The FTSE 100 fell toward 9,200 on Friday, heading for a fourth consecutive session of losses, weighed down by banks. Shares in NatWest, Lloyds, and Barclays dropped sharply after an influential think tank proposed a windfall tax on banks, echoing a policy from the Thatcher era. In the run-up to the autumn budget, the Institute for Public Policy Research (IPPR) has proposed a tax on commercial banks to capture a portion of the profits they gained from quantitative easing, citing the policy’s "unintended consequences". At the same time, global sentiment remained cautious ahead of the latest US PCE inflation numbers that could shed light on the Fed's next moves.