During this time Martyn handled the promotion and marketing of a wide range of artists, including Neil Diamond, Sammy Hagar, Duran Duran, and Kim Carnes [shown above] and also Dr Hook, Paul McCartney, Marc Bolan, Tim Rice, Sheena Easton, George Melly, Steeleye Span, Leo Sayer, Marillion, Kate Bush, the Stranglers, Kim Wilde, Cliff Richard, Queen, Kraftwerk, and the Rolling Stones. At EMI he was responsible for the marketing campaigns behind the company's two best selling albums in a single year - Neil Diamond's The Jazz Singer, and a million-plus selling Dr Hook album for which Martyn received an industry award. He produced two retrospective promos for the Beatles, set up an award-winning documentary about Duran Duran, and produced and co-directed a Kraftwerk video with group member Ralf Hütter.
After leaving EMI in 1983 Martyn moved into freelance video production work, while still working on occasional music projects along the way. His music industry clients after leaving EMI were Polygram, A&M, CBS/SONY, Warner Music, and BMG, and he produced or commissioned more than a hundred music videos and record company EPK's [electronic press kits] featuring artists as varied as The Cure, Michael Ball, Cathy Dennis, Nat King Cole, Yazz, Slade, 10cc, Jason Donovan, and even Timmy Mallett. When Jason was starring in Joseph & the Amazing Technicolor Dreamcoat Cox was the Executive Producer of the first promotional music video ever to feature the entire cast of a West End musical. This led to a highly successful Joseph 'sell-through' video, and he then set up filming in the Seychelles for Jason's 'Mission of Love' promo and 'All Around The World' long-form video.
Now, more than twenty years later, Martyn is an independent writer, producer, and director with well over two hundred productions behind him. In the non-broadcast sector Cox has written, produced, and directed more than 120 corporate video productions: In-flight programmes, Product Launches, Conference Presentations, Speaker Support, Training films, and In-store promotions. Many were produced for Chapman Chapman Associates and the 'end users' included British Gas, RAC, Police Federation, Southern Electric, Coral Racing, IBM, Teletext, International Tennis Federation, and the Royal Opera House, plus many travel industry companies and organisations, notably Eurostar, Hayes & Jarvis, Club 18-30, Tradewinds, Air Europe, Air Seychelles, Dollar Rentacar, Worldchoice, Carlson Wagonlit, and Airtours, and also the national tourist boards of the Seychelles, Cayman Islands, Jamaica, and Spain.
Martyn was the co-producer of 'You Only Breathe Twice' - directed by Mike Seares for Discovery Channel. It documented the development of a revolutionary underwater breathing unit permitting deeper, longer, and bubble-free dives; and in the US the duo gained unique filming access to NASA's largest neutral-buoyancy facility where this new 're-breather' system was being evaluated. [It’s Mike NOT Martyn in the water in the photo below!]