Election 2015: Referendum raised in leaders' election debate

Representatives from six of Scotland's main political parties have been taking part in a televised debate before a studio audience.

On the panel were Scottish Conservative Ruth Davidson, Patrick Harvie, from the Scottish Greens, Scottish Labour's Jim Murphy, Willie Rennie, from the Scottish Liberal Democrats, the SNP's Nicola Sturgeon and UKIP's David Coburn.

Among the topics being debated were the economy, North Sea oil, the EU, and social welfare.