Hecklers disrupt David Cameron's CBI speech

Hecklers disrupted David Cameron's CBI speech by unfurling banners calling the business group the Voice of Brussels.

The protesters later said they were from Students for Britain, an offshoot of the Vote Leave campaign.

They said they had set up a company in order to register for the event and pose as businessmen.

BBC deputy political editor James Landale captured the moment on his smartphone.