For over 40 years, ITV’s It’ll Be Alright On The Night has been a staple of the TV schedules. Often airing around Christmas time, the show collects behind-the-scenes moments where stars of the day struggled with malfunctioning props, tripped over stray cables, or simply forgot their lines.

But the idea for the show has its beginnings in a secret BBC video that sparked a national scandal. The BBC Christmas Tape was compiled by the corporation’s video editors and was never intended for…