Election 2015: Parties clash over Trident renewal plans

Labour has accused the Conservative defence secretary of "demeaning his office", over comments about Labour's plans for the UK's nuclear deterrent.

Michael Fallon accused Labour of using the nuclear deterrent as a "bargaining chip" with the SNP, which would vote to scrap it.

Labour has denied the claim, insisting it is "totally committed" to a continuous, at-sea nuclear deterrent.

James Landale reports.