An undercover reporter had got a job in the prison and was being employed as Huntley's guard.

The undercover reporters posed as mothers concerned over changes to the benefits system, particularly the removal of child benefit for higher earners from 2013.

Business secretary taped telling undercover reporters 'I have a nuclear option; it's like fighting a war'

But if the case involved hidden cameras, undercover reporters or other deceptive techniques, he was intrigued.

She was filmed by an undercover reporter taking a $40,000 (£27,000) down payment.

The teacher who had switched boards was not the only delegate on the history seminar to give advice to the undercover reporter.

The teachers were not the only ones to warn our undercover reporters that some boards would disadvantage students.

Six other peers either declined to help or did not respond to the undercover reporters' approach.

He told undercover reporters: "I signed a pledge that promised not to do this.

When an undercover reporter shows up to do an expose on the school, the students feed her the wild stories that she wants to hear.