UK-based drinks and food giant, Diageo, reported pre-tax profits of £1.228 billion (US$1.836bn) for the six months to the end of December, a marginal improvement on the £1.189bn last year, in line with analysts' forecasts. The first half results were hit by a 29% fall in earnings at the group's fast food business, Burger King, but the spirits division performed strongly, Diageo said.