Britons are becoming more sexually adventurous, with fewer defining themselves as "straight" and an increasing number answering "don't know" when asked to define their leanings.
The annual Integrated Household Survey (IHS) published by the UK's Office for National Statistics (ONS), found a record number of people answering: "I'm sorry I haven't a clue," when asked about their sexual identity.
The survey found that 94 per cent of adults defined themselves as straight, a 0.2 per cent fall.
The figure for heterosexual men dropped by 0.4 per cent to 93.6 per cent. Women identifying themselves as straight fell by 0.2 per cent to 94.3 per cent of the population.
The IHS, the largest social survey published by the ONS, with 420,000 respondents, identified 1.3 per cent of men as gay, with 0.6 per cent of women claiming to be lesbian.