By Sruthi Shankar (Reuters) – Financial stocks led Britain’s blue-chip index lower on Wednesday as gilts continued their selloff, while Barratt Developments’ disappointing results deepened worries for the battered housing sector. The FTSE 100 fell 0.9% extending losses for a sixth straight session, while the midcap FTSE 250 index dropped 1.7%. The pound rose 1.1% in a volatile session after Bank of England (BoE) Governor Andrew Bailey told pension funds they had three days to fix liquidity problems before the bank ends emergency bond-buying that has provided support. Reports signalling that th…