UK Stocks-Factors to watch on July 26

July 26 (Reuters) - Britain's FTSE 100 index is seen opening up 2 points on Wednesday, according to financial bookmakers. * ACACIA MINING: Acacia Mining's shares fell for a sixth straight session on Tuesday, a day after the gold miner was hit with a tax bill of more than $190 billion by the Tanzanian government. * VEDANTA RESOURCES: Zambia's Konkola Copper Mines (KCM) said on Tuesday it was halting operations indefinitely at its Nchanga underground mine (NUG) in Chingola state d