A third of women claim that they have been sexually assaulted when drunk, a survey has revealed, adding more pressure on the government’s plans to extend licensing hours in November.

The survey, conducted by the Portman Group and involving 1,000 18-30 year-olds, found that 36% of female respondents had been assaulted when drunk.

Women also said that they had been injured in an accident, ended up in hospital, got into an argument or been robbed while drunk.