The Family Food Expenditure Study 2004-2005 found that household spending on fresh fruit and fresh vegetables increased by 2.7 per cent and 2.8 per cent respectively.
Alcohol consumption decreased by 3.7 per cent inside the home and fell 7.3 per cent outside the home, while mineral water sales soared 6.2 per cent.
Wholemeal bread sales were up 24.2 per cent, compared with a 6.6 per cent fall in white bread purchases. Total purchases of fats and oils were down 2.3 per cent.
Shoppers favoured semi-skimmed milk over the full-fat variety, with whole-milk sales dropping 18 per cent.
The Defra research also found that, on average, a person living in the UK spends£34.31 on food and drink weekly.