The BBC finally admits that MI5 secretly vetted its employees, an open secret for generations

My wife -- whose father is a TV director who'd worked for the BBC -- learned as a little girl that the British spy agency MI5 secretly vetted people who applied for work at the BBC and denoted possible subversives by putting a doodle of a Christmas tree on their personnel files; people who were thus blacklisted were discriminated against within the Beeb. (more")