LONDON—David Barclay, one of the billionaire identical twins whose business empire includes Britain’s Daily Telegraph newspaper, has died, the newspaper said Wednesday. He was 86. The Telegraph said he died Sunday after a short illness. Born in London in 1934, sons of a traveling salesman, David and his twin Frederick Barclay left school aged 14. They began their working lives as painter-decorators before moving into property and hotels—including London’s iconic Ritz, which they owned from 1995 until 2020—as well as shipping, breweries, retail, and newspapers. They owned weekly newspaper The European from 1992 until it closed in 1998, owned The Scotsman from 1995 to 2005, and bought the Telegraph Media Group, publisher of the Daily Telegraph and Sunday Telegraph, from Canadian mogul Conrad Black’s Hollinger International in 2004. The conservative broadsheet Daily Telegraph has been an unwavering champion of Brexit in recent years. Prime Minister Boris Johnson, a former reporter …