Mackenzie is credited with changing the face of art publishing in the UK and he has created one of the most recognisable and acclaimed body of art work in contemporary art. His considerable following includes the author JK Rowling and HM Queen Elizabeth II and his original paintings, published works and sculpture are held in private and corporate collections across the globe. His collectors come from all walks of life and include famous names from the worlds of sport, music, film, politics and royalty. He has also undertaken many prestigious commissions for clients ranging from The Andre Agassi Foundation and the Elton John Aids Foundation to Princess Anne and William Hague.