Nigel Farage: PM 'does not want to debate EU'
The Labour, Lib Dem and UKIP leaders say they will ask broadcasters to press ahead with general election TV debates even if David Cameron refuses to take part.
Ed Miliband, Nick Clegg and Nigel Farage have written to Mr Cameron saying it would be "unacceptable" for the prime minister to refuse to appear.
Mr Cameron has said he will take part only if the Green Party is included.
Speaking to Radio 4's Today programme, Nigel Farage said that the TV debates should go ahead with or without the prime minister.
The UKIP leader also suggested that Mr Cameron had done badly in the 2010 election debates, and did not want to go head-to-head with him on the issues of Europe and immigration.