Co-Founder and CEO

E: hidde-jan.lemstra@reduse.co.uk

A fan of Unprinting from the first time he heard about it, Hidde-Jan leads our team, builds relationships with potential customers and raises funding to develop the Unprinter. He is a straight talking Dutchman with strong entrepreneurial spirit and experience of working with FTSE25 companies to new start-ups. Hidde-Jan’s career has spanned commercial and strategic roles in finance, strategic offshoring and M&A for organisations including ABN Amro, Prudential and Shell. 

Hidde-Jan holds a degree in International Business from Maastricht University and travels between Cambridge in the UK and The Hague in The Netherlands.




Co-Founder and Chief Scientist

E: david.leal@reduse.co.uk

The inventor of the technology which powers the Unprinter, David achieved a PhD from the Department of Engineering at the University of Cambridge in 2012. His thesis published in the Proceedings of the Royal Society and subsequent research into paper reuse via toner-print removal by laser ablation, forms the basis of our technology. In 2012 David was nominated for the TR35 awards by MIT Technology Review and shortlisted for the IChemE awards by the Institution of Chemical Engineers on the strength of his paper. As well as undertaking commercial projects in advanced manufacturing technology and consultancy work, David has been invited as a keynote speaker at events held by The Mineralogical Society of Great Britain and Ireland, and The British Geological Survey.




Co-Founder and Chairman of the Board

E: stuart.evans@reduse.co.uk

Stuart has been a technology entrepreneur since 1984 and founding CEO at Plastic Logic, Novacem and Cotag International. Reduse is his fifth start-up and his most exciting yet! Stuart was named one of the UK's top venture capital-backed entrepreneurs by the British Venture Capital Association in their book The VC Factor and twice as a ‘Technology Pioneer’ by the World Economic Forum. Stuart holds an MBA from Harvard University and a University of Cambridge mathematics degree. Today he is an Entrepreneur in Residence at the Centre for Entrepreneurial Leadership within Cambridge University’s Judge Business School.




Chief Technology Officer

E: tony.dunn@reduse.co.uk

A chartered engineer with more than 20 years of product development experience, Tony has worked at executive level leading projects for companies such as The Technology Partnership and Irisys. Having worked with printing technology in the past, he felt it was time to turn things on their head with the Unprinter! Tony brings significant knowledge of intellectual property, design and development for manufacturing and deep experience of managing grant funding programmes.






Chairman of the Advisory Board

Julian is a Professor of Engineering and the Environment at the University of Cambridge where he is in charge of a twenty five strong research group looking at environmental systems and production. 

The Centre for Sustainable Development is where David Leal conducted his research that led to the Unprinter. Julian has published two books; Sustainable Materials: with both eyes open (2012) and a revised edition: Sustainable Materials: without the hot air which was released in September 2015. Julian is passionate about environmental sustainability and was a lead author of the 5th Assessment Report of the Intergovernmental Panel on Climate Change (IPCC). He is a member of the UK’s Energy Research Partnership and joint editor-in-chief of the Journal of Materials Processing Technology.




Board member

Bill Matthews is a consultant with Cambridge Enterprise working on various outreach programmes in Cambridge and overseas.  He is a Nonexecutive Director of Cyclofluidics which develops innovative technology to speed up drug discovery for client and in-house programmes.   

From 1999 to 2007 Bill was Head of Seed Funds at the University of Cambridge. Throughout this time, Bill and his team invested in some 25 new ventures.  As a director of several start-ups, he helped to raise second and third round funding and negotiate good exits; for example, BlueGnome was sold to Illumina for $120 million in 2012.  Alongside his role at the university, Bill worked part-time as Head of Finance of IDG Ventures, a US owned VC based in London. 

During his career Bill has been Finance Director of several Cambridge companies such as Team Consulting, TI Research and Sinclair Research.  Prior to his work in Cambridge, he was based in Canada and the USA with Price Waterhouse Associates as a management consultant.  In his early career, Bill was with ICI and Sony (UK) Limited in the UK and the accounting profession overseas.