Developing superconducting and
fusion energy technologies

Dr Chris Martin is Chairman of Tokamak Energy and a Non-Executive Director. He has extensive international experience building and growing businesses in the healthcare, energy and environmental sectors.

He co-founded ADC Therapeutics in 2011 and led the company from start-up through its NYSE listing and the approval and launch of Zynlonta, a treatment for blood cancer. He stepped down as CEO in May 2022.

Chris was also Co-Founder and Chief Executive Officer of Spirogen Ltd, leading the company through its acquisition by AstraZeneca in 2013.

He holds a DPhil from the University of Oxford and an MBA from IMD, and is a Fellow of the Institution of Chemical Engineers and a Sainsbury Management Fellow.

Close

Warrick Matthews joined Tokamak Energy as Chief Executive Officer in January 2023. He leads the company’s strategy to advance and commercialise high temperature superconducting (HTS) and fusion energy technology.

He oversees a team of more than 300 people spanning science, engineering, manufacturing and commercial functions, working with customers and partners to develop superconducting technologies, manufacturing capabilities and supply chains for a new generation of HTS magnet and power systems.

Warrick brings extensive leadership experience from a 24-year career at Rolls-Royce, where he held a series of senior operational roles, most recently serving as Chief Procurement Officer for the Civil Aerospace division.

Close

David is our Executive Vice Chairman and one of the founders of the company.

As CEO he led the company from 2009 to 2017, through several investment rounds, raising about £20m. During that time, the company developed and tested the world’s first tokamak (ST25-HTS) to use exclusively high temperature superconducting (HTS) magnets and grew to 50 staff.

David initiated the ST40 high field compact spherical tokamak project which achieved 100-million-degree plasma temperature in 2022. At the other end of the temperature scale, he started to build an outstanding team of superconducting magnet engineers to develop high performance HTS magnets. One of these magnets achieved the remarkable field strength of 26.2 tesla when tested at a temperature of 4K at CERN in 2020.

Prior to establishing Tokamak Energy, David was CEO of Oxford Innovation, a company supplying premises and innovation support services to high tech ventures.

Close

Mikhail is a founder of Tokamak Energy and our Chief Scientist. He is a leading global authority on tokamaks and has performed experiments on 16 different tokamak during his distinguished career.

After graduating with an Honours Diploma in Plasma Physics from the Leningrad University in his homeland, Mikhail earned a PhD in Plasma Physics and Nuclear Fusion from the USSR Academy of Science. In 1990, he joined the Culham Laboratory in Abingdon and has been responsible for leading experimental programmes, preparing and performing experiments, designing, constructing and operating tokamak systems and diagnostics, as well as supervising students and scientific and engineering personnel.

Mikhail is a Visiting Professor at Imperial College in London and an editorial board member for the Plasma Science & Technology Journal and the Open Plasma Physics Journal. He regularly lectures about the physics behind spherical tokamaks at universities and plasma physics schools across the world.

Close

Erik Bonino joined Tokamak Energy as a Non-Executive Director in January 2021. He has more than 30 years of international experience in the energy sector, spanning operations, major projects, engineering and technology development.

Erik retired from Shell in 2018, having served as UK Country Chair and Executive Vice President, Downstream Technologies. During his career at Shell, he led global technology, engineering and project delivery organisations, established the company’s technology campus in Bengaluru, India, and oversaw businesses including catalysts, licensing and biofuels technology.

Before joining Shell in 2002, Erik spent 18 years in the oil and gas industry in major project leadership and management consulting, including as Vice President, Energy and Utilities at Cap Gemini Ernst & Young. He advised leading energy companies on operational performance and helped deliver utility privatisations across Europe.

Erik mentors technology start-ups through Imperial College London’s IVMS programme. He holds an MBA from Cranfield School of Management and a BSc (Hons) in Electrical Engineering from the University of Southampton, and is a Fellow of the Energy Institute.

Close

David Gray CBE joined Tokamak Energy as a Non-Executive Director in October 2019.

David brings extensive experience across the energy, infrastructure and financial sectors. He spent 30 years in financial markets, primarily with HSBC, where he specialised in the energy sector and advised on major transactions, including the privatisations of British Gas and the UK electricity industry.

He is Chair of Mutual Energy, owner and operator of strategic gas and electricity infrastructure linking Northern Ireland and Great Britain, and Chair of the Energy Innovation Centre, which helps accelerate innovation across the energy sector.

David previously served as Chair of the Gas and Electricity Markets Authority (GEMA), the governing board of Ofgem, from 2013 to 2018. Earlier, he was Ofgem’s Managing Director, Networks, leading the regulation of Great Britain’s gas and electricity networks.

He has also advised the UK Government on the economic regulation of airports, led an independent review of Ofwat, and served as a Non-Executive Director of the Civil Aviation Authority from 2009 to 2019

Close

Sir David Harding joined Tokamak Energy as a non-executive Director in March 2022. He is the Founder and Chief Executive Officer of Winton Group Limited.

Sir David graduated from Cambridge University with a First Class Honours degree in Natural Sciences specialising in Theoretical Physics. He then embarked on a career in the analysis of futures and trading markets, which led him to co-found Adam, Harding and Lueck Ltd in 1987 with Martin Lueck and Michael Adam. AHL rapidly became one of the leading commodity trading advisors in the UK and was acquired by Man Group plc in 1994. Sir David left Man Group plc in 1996 and in February 1997, he co-founded Winton with Martin Hunt and Osman Murgian with a commitment to applying financial mathematics and empirical scientific research to creating and developing trading systems for the financial markets.

Sir David has endowed a number of significant projects principally supporting the funding of basic science research in the UK and around the world, including the Winton Programme for the Physics of Sustainability at the Cavendish Laboratory, Cambridge and the Winton Bio-informatics Suite at the Francis Crick Institute. In 2019, Sir David’s foundation gave US$130 million to Cambridge University.

He sits on the Advisory Board of the Royal Society and the University of Cambridge Development Board, and is an honorary Fellow of the Science Museum, and of St Catharine’s College, Cambridge.

Close

Warrick Matthews joined Tokamak Energy as Chief Executive Officer in January 2023. He leads the company’s strategy to advance and commercialise high temperature superconducting (HTS) and fusion energy technology.

He oversees a team of more than 300 people spanning science, engineering, manufacturing and commercial functions, working with customers and partners to develop superconducting technologies, manufacturing capabilities and supply chains for a new generation of HTS magnet and power systems.

Warrick brings extensive leadership experience from a 24-year career at Rolls-Royce, where he held a series of senior operational roles, most recently serving as Chief Procurement Officer for the Civil Aerospace division.

Close

Thomas is Director of Direct Investments of the WILD Family Investment Office.  He joined the Family Office following the sale of WILD Flavors GmbH, one of the world’s leading suppliers of natural ingredients to the food and beverage industry, for which he served as Head of Strategic Development directing the company’s global M&A activities since October 2011.  Thomas currently serves on the Boards of Directors of several other companies, including TTTech Computertechnik AG.  He holds a Master’s in Finance from Cambridge University, UK, as well as a BA in Economics and a BA in Business Administration, both from University of St. Gallen, Switzerland.

Close

Daniel Freeman is a Non-Executive Director of Tokamak Energy and leads Dorilton Ventures, investing in advanced technology companies with the potential to transform major industries.

With more than 20 years of experience across venture capital, public markets and private investing, Daniel brings expertise in company growth, capital allocation and commercial strategy. Prior to Dorilton Ventures, he held investment roles at Lehman Brothers, Deutsche Bank and Eton Park Capital Management.

Daniel holds an AB from Princeton University, was a Fellow at the Johns Hopkins-Nanjing Center for Chinese and American Studies, and earned an MBA from Harvard Business School.

Close

Warrick Matthews joined Tokamak Energy as Chief Executive Officer in January 2023. He leads the company’s strategy to advance and commercialise high temperature superconducting (HTS) and fusion energy technology.

He oversees a team of more than 300 people spanning science, engineering, manufacturing and commercial functions, working with customers and partners to develop superconducting technologies, manufacturing capabilities and supply chains for a new generation of HTS magnet and power systems.

Warrick brings extensive leadership experience from a 24-year career at Rolls-Royce, where he held a series of senior operational roles, most recently serving as Chief Procurement Officer for the Civil Aerospace division.

Close

Warrick Matthews joined Tokamak Energy as Chief Executive Officer in January 2023. He leads the company’s strategy to advance and commercialise high temperature superconducting (HTS) and fusion energy technology.

He oversees a team of more than 300 people spanning science, engineering, manufacturing and commercial functions, working with customers and partners to develop superconducting technologies, manufacturing capabilities and supply chains for a new generation of HTS magnet and power systems.

Warrick brings extensive leadership experience from a 24-year career at Rolls-Royce, where he held a series of senior operational roles, most recently serving as Chief Procurement Officer for the Civil Aerospace division.

Close

Sir Warren East CBE joined Tokamak Energy as a Non-Executive Director in May 2023.

After 11 years with Texas Instruments, Warren joined Arm in 1994. He was appointed to the board in 2000 and served as CEO from 2001 to 2013, leading the company’s growth into the world’s leading semiconductor intellectual property licensing business.

In 2014, Warren joined the board of Rolls-Royce Holdings as a Non-Executive Director and Chair of its Technology Committee. He became CEO in April 2015 and led the company through a period of significant transformation, including the challenges of the Covid-19 pandemic and its transition towards a net-zero future. He retired from Rolls-Royce on 31 December 2022.

Warren was appointed Chair of NATS, the UK’s air traffic services provider, in 2024. He is a Fellow of the Institution of Engineering and Technology, the Royal Society and the Royal Academy of Engineering, a Distinguished Fellow of the British Computer Society, and a Companion of the Chartered Management Institute. He holds a degree in Engineering Science from the University of Oxford, an MBA from Cranfield University, and honorary doctorates from Cranfield, Newcastle, Bath, Derby, Loughborough and Oxford universities.

Warren was appointed CBE in 2014 for services to engineering and technology and was knighted in the 2025 New Year Honours for services to the economy and net zero. Together with his wife, Amanda, he established The Relithan Charitable Trust, which supports science education and the advancement of STEM subjects

Close

Rory Scott Russell is head of Venture Capital at East Innovate, the venture capital arm of East X, a quantitative commodity technology and research company. East Innovate invests and partners with early-stage, research-driven start-ups addressing the global energy challenge. He is the founder and co-founder of several technology companies, following an early career in international energy. He has a BSc in Computer Science and Al from the University of Edinburgh.

Close

Martin Kleppe joined the Tokamak Energy Board as a Non-Executive Director in January 2025.

He is General Counsel to the family office of Dr Hans-Peter Wild, where he oversees legal matters across a broad portfolio of investments and holdings.

Martin has extensive experience in corporate law, mergers and acquisitions, governance and investment transactions, gained through senior legal and advisory roles in private investment, international legal practice and banking. Prior to joining the family office in 2017, he spent more than ten years at an international law firm specialising in M&A, worked within the legal team of an investment bank in Sydney, and served as a board member of a real estate company.

Martin holds a law degree and a Doctor of Law from the University of Cologne.

Close

Since joining Tokamak Energy in 2016, Dr. Ross Morgan has been instrumental in establishing and leading the global strategic partnerships that are crucial for commercialising the company’s pioneering fusion and superconducting technologies. Recently, he spearheaded the creation of Tokamak Energy K.K., the company’s Japanese subsidiary.

Dr. Morgan holds both a BSc and a PhD in Chemistry from the University of Bristol. His career in plasma systems began in 1996 at the Culham Centre for Fusion Energy. Over the years, he has held various commercial management roles at AEA Technology, Accentus plc, and CompactGTL Ltd.

With over 25 years of experience in developing and commercialising new technologies, his unwavering commitment to innovation and partnership continue to play a pivotal role in Tokamak Energy’s success. He is driven by the opportunity to work on cutting-edge technology that promises to have a profound positive impact on the future of our planet.

Close

Anita Breslin is a highly accomplished finance professional with extensive leadership experience. Appointed as Chief Financial Officer at Tokamak Energy in 2024, she brings 25 years of expertise in the energy sector, having previously served as CFO at AIM-listed AMTE Power.

Her career includes a significant 19-year tenure at BG Group plc, where she was a key member of the Global Business Development leadership team, responsible for setting the growth strategy for the group. During this time, she was involved in major investment activities, including a multi-billion-dollar LNG offtake contract, and played a crucial role in the integration of BG Group and Shell following their merger in 2016.

Since 2016, Anita has focused on renewable and alternative energies, holding leadership roles at Vattenfall Energy Solutions, Joule Africa, and AMTE Power. Her financial acumen, strategic vision, and collaborative approach are now driving Tokamak Energy’s efforts to deliver fusion energy and transformative HTS technology, advancing the company’s growth strategy. Anita is driven by a commitment to realising clean fusion energy at scale.

Close

Itxaso Ariza joined Tokamak Energy as Chief Technology Officer in 2024, following an impressive 19-year career at Rolls-Royce, where she held various technical leadership roles. Most notably, she served as Chief Engineer in the civil aerospace division for seven years, becoming the first female Chief Engineer for a major engine program in the company’s century-long history.

A Fellow of the Institution of Mechanical Engineers since 2015, Itxaso was honoured with the Sir Ralph Robbins Royal Aeronautical Society medal for Excellence in Engineering Leadership in 2019. Originally from Bilbao, Spain, she now leads Tokamak Energy’s technology strategy and execution at a crucial time of commercialisation and growth for the company’s fusion and high-temperature superconducting (HTS) technology.

Itxaso is driven by a desire to contribute to the development of a cleaner energy future, and to leverage the transformative impact of superconducting technologies across multiple sectors, helping to turn Tokamak Energy’s technological advantage into a world-leading business.

Close

Christian Lowis joined Tokamak Energy as the company’s first General Counsel in 2023. He brings extensive legal expertise from his nine-year tenure at Rolls-Royce, where he served as Chief Counsel for Operations and Procurement, gaining significant experience in supply chain management and complex transactions. Prior to Rolls-Royce, he spent 15 years in private practice, including as a partner at a Top 25 global law firm, specialising in mergers and acquisitions, partnerships, stock market launches, and fundraises.

Christian oversees Tokamak Energy’s legal matters, particularly those related to intellectual property and partnerships, which are crucial for the commercialisation of the company’s world leading fusion energy and high-temperature superconducting (HTS) technologies.

Close

Dr. Michael Ginsberg is the President of Tokamak Energy Inc., where he spearheads the growth of the company’s U.S. operations, established in 2019.

Dr. Ginsberg has nearly two decades of experience in the sustainable energy sector. As Vice President of Technology at Avina Clean Hydrogen, he led system integration and project execution for green hydrogen plants and played a pivotal role in the company’s capital raise. His previous roles include Vice President of Energy Transition at Bowman Consulting Group, where he expanded energy services and advised on several multimillion-dollar acquisitions. Additionally, he served as a solar energy specialist for the U.S. Department of State and as an advisor for the UC Berkeley community microgrid project, EcoBlock. He is also the author of two books on renewable energy.

Dr. Ginsberg is leading Tokamak Energy Inc.’s U.S. expansion in both fusion and superconductor technologies, following the company’s selection as one of eight private companies for the U.S. Department of Energy’s multimillion-dollar Milestone-Based Fusion Development Program. Building on long-standing relationships with U.S. government, industry, and research partners, he is committed to delivering a clean and energy-secure future, utilising Tokamak Energy’s world-leading technologies to help achieve U.S. energy independence and revolutionize energy-intensive industries.

Close

Dr. Liam Brennan is the Director of TE Magnetics at Tokamak Energy, where he leads the company’s superconducting technology business into an exciting new era. Prior to joining Tokamak Energy, Liam spent eight years at the UK Research and Innovation Science and Technology Facilities Council (STFC), an organisation that supports cutting-edge research in astronomy, physics, high-power laser, computational science, and space science. As Head of Technology Transfer and Associate Director at STFC, he led a team working across all areas, focused on exploiting innovations and commercial opportunities arising from physical sciences research. He also oversaw the execution of technology sales, licences and the creation of spinouts backed by patents and strong technical teams.

Liam holds a PhD in Biosystems Engineering from University College Dublin. He is driven by a passion for realising the positive real-world value of technology innovation. His strategic vision and leadership are crucial as he spearheads the commercialisation of Tokamak Energy’s transformative high-temperature superconducting technology for fusion and other applications, including analytical science, renewable energy, power distribution, and propulsion across land, water, air, and space.

Close

Dr. Michael Porton is a distinguished engineer with eighteen years of experience at the forefront of technological innovation. Before joining Tokamak Energy, he dedicated nearly a decade to the UK Atomic Energy Authority. During his tenure, he served as Chief Engineer of the Joint European Torus Project, where he led preparations for world-record campaigns. Subsequently, he became the UKAEA Chief Engineer, overseeing the safety, effectiveness, and impact of engineering across all UKAEA fusion facilities and activities.

In 2022, Dr. Porton took on the role of Chief Engineer at Tokamak Energy. Here, he spearheads the design and realisation of the company’s fusion devices, driving the future of fusion energy. Dr. Porton holds a PhD in Engineering from Cranfield University and an MSc in Nuclear Physics and Engineering from the University of Birmingham.

His work is characterised by his ability to bridge disciplines and foster effective teamwork. His exceptional contributions have been recognized by the UK Royal Academy of Engineering, which awarded him the prestigious George Macfarlane Award.

Close

Lyanne Maclean MBE is the Director of Operations at Tokamak Energy, playing a pivotal role in the company’s journey towards commercial fusion. She joined the company in late 2022, bringing extensive experience from both the public and private sectors, and has led on our many of TE’s key programmes – ST40 and DEMO4 in addition to our operational teams.

Before joining Tokamak Energy, Lyanne for three years was the Chief Operating Officer at the UK Atomic Energy Authority (UKAEA), where she led the daily operations of the organisation including JET and implementing business strategies and initiatives. Prior to her tenure at UKAEA, she spent five years at Royal Mail, holding senior operational appointments in Fleet and Operations, where she contributed to the commercialisation of the fleet, the delivery of operations, and the establishment and success of the LGBTQ+ Network.

Lyanne’s career began with a distinguished 26-year military service in the British Army, with the Royal Logistic Corps. Rising to the rank of Colonel, she served in leadership and strategic roles in the Ministry of Defence, with the UN, and NATO and led in conflict zones. She was made a Member of the Order of the British Empire (MBE) for her services.

At Tokamak Energy, Lyanne’s vision and operational expertise are crucial as the company develops its pioneering fusion and superconducting technology, scales its business, and builds further collaboration across the industry.

Close

As Director of People and Engagement at Tokamak Energy, Jane Shannon shapes the company’s human resources and engagement strategies during a pivotal growth phase for the company and the wider fusion industry.

Jane brings a wealth of experience from her previous HR leadership roles in both public and private sectors. Prior to joining Tokamak Energy, she served as Human Resources Director at Corndel, an organisation specialising in training programs for major companies. She also spent three years at G4S as Head of Learning and People Development. Jane’s career began in public service, including a decade as Head of Learning and Development at Her Majesty’s Courts and Tribunals Service (HMCTS).

At Tokamak Energy, Jane leads the People and Engagement department, driving strategic HR initiatives and nurturing a positive workplace culture. She also co-chairs the UK Fusion Skills Council, a collaboration between the UK Atomic Energy Authority (UKAEA), commercial entities, and academic institutions, aimed at supporting the fusion industry’s expanding workforce.

Jane is passionate about empowering the next generation to achieve the goal of delivering fusion as a reliable source of clean and affordable energy, addressing the growing energy demand and combating climate change.

Close