At one point during questioning, an officer held up a copy of a publicly available parliamentary written answer that he had faxed to a journalist as evidence of illegal activity.

The government told him in a written answer that it would be too confusing.

Cautions for possession fell from 20,609 to 12,672 between 2009 and 2014, a parliamentary written answer states.

Another written answer said that the probation inspectorate had recently recruited two new directors and another executive, which increases 'senior staff capacity' and enables some delegation of work.

Students must use documents as well as listen to a recording to give a written answer to the question.