Boris Johnson says UK has 'oven ready' trade deals – but can't name how many news.sky.com

The prime minister takes questions on a radio phone-in after being replaced by a melting ice sculpture at a TV debate.
Boris Johnson takes questions on radio phone-in
Tories embroiled in row with Channel 4 after broadcaster used ice sculpture in place of PM in debate
Johnson also due to give news conference later
Labour launches regional manifestos as Lib Dem leader Jo Swinson meets faith leaders
Live reporting by Alan McGuinness, political reporter