Stuart has a comprehensive electronics and inkjet industries background and is named on numerous patents. His contribution has been recognised in a number of UK university appointments and, since joining PTL, by the award of a prestigious Royal Society Industrial Fellowship..

John is an experienced chemist with an international career in the film and paper coatings industry. He has held senior management positions for both Ilford ltd and Rexam Coated Films and Papers covering R and D, quality management, project management and business development. He is the inventor of Ilford XP2 film and is named on a significant number of patents.