BBC election debate video: What time is it, who's taking part and everything else you need to know

Video: A handy guide on what to expect from the last TV election debate

(Ken McKay | ITV via Getty Images)

David Cameron and Nick Clegg may not be taking part - but then again, they may not even be in 10 Downing Street in three weeks time.

With the polls not showing much bar this election is too close to call and Britain may at last be revelling in the death of two-party politics, the BBC debate between the five main opposition candidates is the last chance for the familiar and unfamiliar faces of UK politics to make a mark - or slump completely.

David Dimbleby will chair the one-hour-and-a-half debate between Labour's Ed Miliband, Ukip leader Nigel Farage, the Greens' Natalie Bennett, SNP leader Nicola Sturgeon and Leanne Wood of Plaid Cymru.