A student has told how she was conned by the BBC into believing its journalist was a history professor so he travel to North Korea for a Panorama investigation.

The London School of Economics student, who wants to remain anonymous, has intensified pressure on the BBC, which is under fire over a Pyongyang documentary shown last night.

The student told MailOnline: '[Panorama journalist] John Sweeney was presented to use as a history professor from a university in Beijing.

'I was wondering why they were filming him so much. It was two days before then end of the trip that I realised he was an undercover journalist.'...