Radical Islamist Anjem Choudary is reported to have featured in a video that threatened UK Muslims, according to the Daily Telegraph.
Mr Choudary allegedly called David Cameron and Home Secretary Theresa May "pathetic foolish leaders".
The preacher told the newspaper: “I am happy for what I say anywhere in the world in any clip because at the end of the day I believe that I speak what is right according the divine texts.
“If they want to use that clip I don’t have any problem with that at all.”
More top news
Every school rated as inadequate by Ofsted will be turned into academies under new laws, the Education Secretary has announced.
The new Teletubbies have been revealed - complete with touch-screens on their stomachs.
US whistleblower Edward Snowden has said becoming an "international fugitive" has been worth it.