Ukip has insisted Nigel Farage "misspoke" after he appeared to disown the party's policy of banning sex education in primary schools.
Mr Farage was asked about the proposal - unveiled by his deputy Paul Nuttall at the party's conference in September - as he was grilled by young people.
"I've never advocated that policy," he replied.
However, after the question and answer event Mr Farage tweeted: "Sorry, I missed the beginning of Mr Nuttall's conference speech. He did indeed lay out policy on sex education."
A Ukip spokesman denied that Mr Farage disagreed with the party's official policy, saying he "just misspoke".