The heatwave has sent sales of soft drinks and ice cream soaring with several drinks groups also announcing increased production. Coca-Cola said sales last week were 30 per cent higher than last year. Bass has increased production of Hoopers Hooch, its new alcoholic lemonade, while Birds Eye Walls says ice-cream sales are substantially higher than last year. Pub groups such as Whitbread said beer sales were doing well. Shares in the drinks groups Cadbury-Schweppes and AG Barr rose yesterday on the back of strong sales figures.