UPDATE 2-UK Stocks-Factors to watch on Oct 16

(Adds company news items) Oct 16 (Reuters) - Britain's FTSE 100 index is seen opening 20 points higher on Monday, according to financial bookmakers, with futures up 0.03 percent ahead of the cash market open. * INTERSERVE: British support services and construction company Interserve Plc said on Monday it has engaged in discussions with its lenders. * CONVATEC: British medical technology company ConvaTec Group Plc cut its full-year organic