The Promethean Family
Meet Our Team
OUR MOF PIONEERS
Leadership Team
Chris Simmons
Business Development Manager
Selina Ambrose
Product Manager
James Stephenson
Chief Executive Officer
Paul Kirkman
R&D Manager
Owen Cartmell
Operations & Engineering Manager
Rebecca Ryder-Brown
Process Chemist
Scott Priest
Process Chemist
Joanne Stephenson
Office & Finance Manager
Leah Matsinha
Senior Synthetic Chemist
Kale Cooke
Laboratory Technician
Mel Sheard
Project Manager
David Adjar
Process Development Engineer
Andreas Must
Manufacturing Engineer
James Dale
Process Engineer
Chitrakshi Goel
Senior Application Engineer
Aaron Taylor
Process Development Engineer
Andrew Jones
Synthetic Chemist
 Board of Directors
Alan Lamb
Chairman of the Board / Non-executive Director
Alan has broad experience with technology businesses, ranging from those in their early stages to large public companies. He led the management buyout of Computer Security International from Advent, which was acquired by Racal Electronics, where he was CEO of Racal IT Security.
Over the last decades, Alan has developed spin-out companies from UK universities as a mentor, chairman and non-executive director. In addition to Promethean Particles, he is also non-executive director at Smartnumbers, which uses machine-learning to identify fraudulent calls into banking and other call centres.
He holds a degree in engineering science and an MBA.
James Stephenson
Executive Director / Chief Executive Officer, Promethean Particles
With an extensive background in chemical manufacturing and processing, James’ career spans both sides of the Atlantic. He worked for Dow Corning (now Dow) for more than 16 years in the UK and United States, where he became global product manager for its electronics and advanced materials business.
He also led an internal start-up for the development of silicon nanoparticle-based inks for printed electronics. Since then, he was the general manager/managing director for Polyone Corporation (now Avient) and the vice president, Global Business Development, at Carlisle Fluid Technologies.
In 2020, he joined Promethean Particles as CEO. He holds an M. Eng in chemical engineering from Swansea University, an MBA from Manchester Business School, and is a Fellow of the Chartered Institute of Marketing.
Prof Ed Lester
Executive Director / Chief Scientific Officer, Promethean Particles
Ed is part of the Advanced Materials Research Group and the Lady Trent Professor of Chemical Engineering, Faculty of Engineering, at the University of Nottingham. He has a PhD in chemical engineering.
For more than 20 years, Ed has researched many topics, including power generation and fuel combustion. But one area of research — on continuous supercritical fluid reactors — led to the launch of Promethean Particles, where he is the chief scientfic officer.
He also works on projects where his research interests overlap: chemicals and energy from biomass waste, through gasification, supercritical water oxidation, hydrothermal extraction or thermal upgrading.
Marina Fuentes
Investor Director / Investment Manager, Mercia Ventures
Marina is part of Mercia’s VCT investment team and is involved in identifying new investment opportunities, completing transactions and supporting Mercia’s portfolio companies.
Marina joined Mercia in February 2022. Before then, she worked at Oxford University Innovation, where she helped create spinouts, raised investment for these companies and supported them through Board roles. After 8 years in the world of science and tech transfer, Marina has experience in commercialising technologies from various disciplines such as biotech, renewable fuels, energy storage, materials, software, and drug development, among others. She holds a PhD in Chemistry from the University of Nottingham.
Irfan Ashfak
Investor Director / Investment Manager, Foresight Group
Irfan joined Foresight in July 2022 and is a manager based in Foresight’s Nottingham office. He first joined the Promethean Board as an observer in February 2023 and has overseen a number of investments into the Company.
Prior to Foresight, Irfan worked at Magma Corporate Finance where he provided financial modelling and lead advisory for acquisitions and disposals in the manufacturing, environment and technology sectors. Irfan also has financial due diligence and business turnaround experience from his time at Mazars LLP.
Irfan holds a Bsc in International Relations and Business from Aston University.
Lisa Schneider
Investor Observer / Investment Associate, Aramco Ventures
Since 2023, Lisa is an investor at the corporate venture capital group of Aramco – Aramco Ventures. She works for the strategic sustainability fund with focus on European climate tech deals targeting industrial decarbonisation and lower carbon fuels.
Before joining Aramco Ventures, Lisa was portfolio manager at Chemovator, BASF’s inhouse (pre-)seed investor and company builder, which she contributed to set up as incubation operations manager in a small team back in 2018.
The passion for (early-stage) company building, venture capital and deep-tech sparked in previous positions at BASF, Novo Nordisk, and her co-founder role at a university edtech startup.
She holds a MSc. degree in Innovation Management, a B.Sc. in International Management and has international working experience in Hong Kong, Denmark, Canada, Germany, and the UK.
Nigel Owens
Investor Observer / Portfolio Director, Mercia Ventures
Nigel joined Mercia in 2019, and is a portfolio director for the VCT team. Nigel sits on the board of a number of VCT portfolio companies and works with management teams to support them through their growth journey. He is a member of the VCT Investment Committee and is based in the Sheffield office.
Nigel has over 18 years’ experience in venture capital. He started his career with Deloitte advising investors, and prior to joining Mercia was a partner at YFM Equity Partners where he worked originating and completing new investments, as well as managing acquisitions, fund raisings and realisations.  He trained as an engineer, holds an MBA from Cranfield and has experience in investments in software, engineering, telecoms, support services and technology businesses.
Mike Doswell
Investor Observer / Chief Investment Officer, TSP Ventures
Mike is co-founder and chief investment officer at TSP Ventures, an early-stage environmental and climate tech venture firm. Mike cares deeply about playing his part in successfully navigating the green transition and believes new technology is a crucial piece of the puzzle.
Before founding TSP Ventures, Mike was a member of the Strategic Investments Group at BGC Partners where he acquired, integrated and helped manage over a dozen businesses. Mike has also successfully raised money for a number of start-ups.
Mike is a graduate of the London School of Economics and a CFA Charterholder.
Our Investors
Ever since Promethean spun out of the University of Nottingham in 2007, we have been proud and thankful for the support of all our investors.
From large institutions to our strong base of angel investors, we could not do what we do without your support.
We strive everyday to build a strong, sustainable, and profitable company to repay the faith you placed in us.