By Johann M Cherian and Bansari Mayur Kamdar (Reuters) -UK’s main stock index ended a volatile session flat on Thursday as gains in banking and consumer stocks offset losses in energy shares. After two sessions of sharp losses, the blue-chip FTSE 100 paused as banks rose 1.8% on bets of a 70% chance that the Bank of England would deliver a 75-basis-point interest rate hike on Sept. 22. [IRPR] While data on Wednesday showed that inflation surprisingly fell in August, a BoE survey said the British public’s expectations for inflation over the coming year rose to a record high last month. “We have…