UK Stocks-Factors to watch on March 28

March 28 (Reuters) - Britain's FTSE 100 index is seen opening 53 points lower on Wednesday, according to financial bookmakers. * RYANAIR: Some Ryanair cabin crew in Portugal will go ahead with one-day strikes during the Easter holidays after Europe's largest low-cost carrier failed to meet their demands on working conditions, the SNPVAC union said on Tuesday. * ANGLO AMERICAN: Anglo American will resume mining operations in its Minas-Rio system in Brazil on Tuesday after suspend