Terrific bit of trivia from Wikipedia: "In June 1949, [Michael] Standing issued a memo to all staff in which he forbade BBC employees to illuminate any room with an Anglepoise lamp unless the main ceiling or wall mounted light was also illuminated. Standing held a firm belief that a man working at a desk in a confined space with only the light from a low-wattage lamp would nurture furtive ideas and produce degenerate programme material."