Five of Westminster’s opposition party leaders are making final preparations for a live TV election debate.

Labour leader Ed Miliband, UKIP’s Nigel Farage, SNP leader Nicola Sturgeon, Leanne Wood of Plaid Cymru and the Greens’ Natalie Bennett will take part.

Lib Dem leader Nick Clegg complained the debate would be “lopsided” without either of the government parties.

The PM said it was part of a deal to “unblock the logjam” over debates but Labour accused him of “ducking” them.

The BBC contest, hosted by David Dimbleby from central London, begins at 20:00 BST.