UPDATE 1-Suntory to buy GSK's Lucozade, Ribena for $2.1 bln

LONDON, Sept 9 (Reuters) - Japan's Suntory Beverage & Food Ltd is to buy GlaxoSmithKline Plc's Lucozade and Ribena brands for 1.35 billion pounds ($2.11 billion) to broaden its soft drinks portfolio and help it expand into new markets.