InvestmentsTop Global NewsMarketsReal Estate Diageo full-year sales plunge as demand in bars, restaurants dries up By financialnews_rlv83x - August 4, 2020 0 128 Diageo Plc , the world’s largest spirits maker, took a 1.3 billion pound writedown as it reported a bigger than expected decline in underlying net sales on Tuesday as demand for its whisky, vodka and gin fell in nearly all markets.