If ever there was an example of ‘security’ factors being used as a pretext for political vetting, it is at the BBC. When their security procedures were revealed in 1985, the corporation said that vetting was restricted to a relatively small number of people who had access to ‘sensitive information’. But in reality a large number of BBC employees – ranging from Graduate Trainees and journalists to arts producers and drama directors – were vetted by MI5 via the Personnel Department.