UK Stocks-Factors to watch on March 22

March 22 (Reuters) - Britain's FTSE 100 index is seen opening 42 points lower on Wednesday, according to financial bookmakers. * VODAFONE: New Zealand pay television provider Sky Network TV on Wednesday filed an appeal against the Commerce Commission's decision to bar its purchase of Vodafone's local unit. * ACACIA MINING: Canadian gold miner Endeavour Mining Corp said on Tuesday it had ended discussions with London-based Acacia Mining Plc regarding a potential merger. * S