[5] The HHCL initials were dropped and the agency became United London in January 2006, before being closed down by its owner WPP Group in the beginning of 2007.

[3] HHCL believed that the quality of a company's communications could lead to a real competitive advantage and produced a book written by Adam Lury: Marketing at a Point of Change which expounded this view.

[7] In the early nineties, the agency created commercials for Maxell cassettes[8] using commonly misheard lyrics shot in the style of the video for Subterranean Homesick Blues by Bob Dylan.

[12] In August 2000, Time Computer Systems handed its advertising account to HHCL, which saw the end of the adverts featuring Leonard Nimoy of Star Trek.

[13] In 2002, a campaign created by HHCL for Easynet's broadband services showed both male and female bosses punching their employees for wasting company money.