UK Stocks-Factors to watch on Feb. 15

Feb 15 (Reuters) - Britain's FTSE 100 index is seen opening up 26 points at 7294 on Wednesday, according to financial bookmakers. * The blue chip FTSE 100 index ended slightly lower on Tuesday at 7,268.56, pausing after a five-day winning streak as Rolls-Royce tumbled after reporting a record loss. * IAG: British Airways cabin crew members working for the carrier's mixed fleet are to strike for a further four days from Feb. 22, trade union Unite said on Tuesday. * DEUTSCHE BANK: U.