No simply true. Indeed, I have missed out Ardent Productions.
In 1993, Edward formed the television production company Ardent Productions. Ardent was involved in the production of a number of documentaries and dramas, but Edward was accused in the media of using his royal connections for financial gain, and the company was referred to by some industry insiders as "a sad joke" due to a perceived lack of professionalism in its operations. Andy Beckett, writing in The Guardian, opined that "to watch Ardent's few dozen hours of broadcast output is to enter a strange kingdom where every man in Britain still wears a tie, where pieces to camera are done in cricket jumpers, where people clasp their hands behind their backs like guardsmen. Commercial breaks are filled with army recruiting advertisements".
en.wikipedia.org/wiki/Prince_Edward,_Duke_of_Edinburgh