It is a blow to drinks firms, which otherwise escaped duty increases on spirits, wine and beers. Diageo, led by Paul Walsh, has enjoyed great success with its trendy vodka-based Smirnoff Ice and Smirnoff Mule. Duty on a standard 275ml bottle of Smirnoff Ice, priced £2.25, will rise 11p to 29p. According to analysts, the brand contributed £100m of global operating profits in the first half.