(For a Reuters live blog on U.S., UK and European stock markets, click LIVE/ or type LIVE/ in a news window) * FTSE 100 up 0.3%, FTSE 250 adds 0.4% Sept 23 (Reuters) - London’s FTSE 100 rose on Thursday, led by energy and mining stocks, as investors awaited the Bank of England’s meeting later in the day for inflation outlook and taper timelines following a tilt by the U.S. central bank towards a November easing of its asset purchases.The blue-chip FTSE 100 gained 0.3% with Glencore , Rio Tinto, BP and Royal Dutch Shell among the top boosts. Royal Mail Plc climbed 2.1% to be the top FTSE 100 gainer after it forecast a surge in first-half operating profit. The domestically focussed mid-cap index rose 0.4%.Britain’s central bank looks set to keep interest rates steady later in the day with its policy decision due at 1100 GMT as it approaches the end-point of its 895 billion pound ($1.22 trillion) asset purchase programme on the backdrop of rising inflation. London-listed shares of South Africa-based financial services group Investec gained 2.2% after it said it expected an up to 114% rise in half-year profits. Britain’s Mitchells & Butlers Plc rose 1.4% after it said sales over the past two months had been above pre-pandemic levels. (Reporting by Shashank Nayar in Bengaluru; Editing by Subhranshu Sahu)