UK Stocks-Factors to watch on June 7

Britain's FTSE 100 index is seen opening up 18 points at 7,278 on Friday, according to financial bookmakers. * BHP: Global miner BHP Group said it has set up a tailings taskforce to further improve the focus on internal dam management and boost safety, months after a second deadly dam disaster in Brazil. * HAMMOND: Britain's finance minister Philip Hammond said he would press the Group of 20 leading economies this weekend to introduce a global tax on the revenu