British FTSE 100 index started lower on Tuesday on news Moody's cut sovereign ratings for 6 European nations and also threatened to downgrade UK. British index fluctuated between gains and losses during session on UK inflation data and German investor confidence report. On the upside it was supported by oil stocks with Royal Dutch Shell PLC gaining 1.1% and Tullow Oil PLC advancing 0.9%. Vodafone Group PLC edged down 0.7%. The company announced on Monday, it is considering a bid for Cable & Wireless Worldwide PLC. At the moment of writing FTSE 100 is 0.25% or 14.88 points down at 5,890.82.