Sadiq Khan calls for campaign 'arms race' on housing

The Mayoral hopeful spoke from the floor at the launch of Fifty Thousand Homes, a business backed campaign to double the number of homes built in London each year. He gave an "unambiguous welcome" to the campaign and offered details of where he thinks solutions to London's housing crisis lie. For more: www.fiftythousandhomes.com Twitter: @50000Homes