UK Stocks-Factors to watch on May 25

May 25 (Reuters) - Britain's FTSE 100 index is seen opening up 48 points at 7,765 on Friday, according to financial bookmakers. * SHELL: A British judge ruled on Thursday that Nigeria's Bodo community, which has been involved in a protracted legal battle with Shell over the clean-up of two 2008 oil spills, should retain the option of litigation for another year. * VEDANTA RESOURCES: India's Tamil Nadu state said on Thursday that it was seeking a permanent closure of a big copper