UPDATE 1-UK Stocks-Factors to watch on March 7

(Adds company news, futures) March 7 (Reuters) - Britain's FTSE 100 index is seen opening down 18 points on Wednesday, according to financial bookmakers, with futures down 0.5 percent ahead of the cash market open. * LOOKERS: British car dealer Lookers Plc reported a 2.7 percent rise in 2017 profit, with growth seen across all its businesses particularly its used car segment. * RESTAURANT GROUP: Restaurant Group Plc, the owner of Frankie & Benny's chain, on Wednesday reported