About us

Key staff

Biographies of key staff at Culham Centre for Fusion Energy. Details of the organisation of JET can be found on the EFDA website.


Roger CashmoreProfessor Roger Cashmore – Chairman, United Kingdom Atomic Energy Authority and EURATOM/CCFE Fusion Association

Roger Cashmore was appointed Chairman of the United Kingdom Atomic Energy Authority in July 2010. He is a Fellow of the Royal Society and in 2010 led its working group on nuclear proliferation. He is a former Principal of Brasenose College, Oxford University, and is a Professor of Experimental Physics at Oxford. Previously, he was Director of Research and Deputy Director General of CERN, where he was responsible for the Large Hadron Collider's experimental programme. Before this he was Chairman of Physics at Oxford. During his career he has authored more than 200 publications. He has been a Visiting Professor in Tsukuba in Japan, Brussels, Padua and Fermilab and holds an Honorary Doctorate from the Joint Institute of Nuclear Research in Dubna, Russia. He was awarded the C V Boys Prize by the Institute of Physics and a Research Award by the Alexander von Humbold Foundation in Germany. In 2004 he was made a Companion of the Order of St Michael and St George (CMG) for services to international particle physics.


Steven CowleyProfessor Steven Cowley –  
Chief Executive Officer, United Kingdom Atomic Energy Authority and Head of EURATOM/CCFE Fusion Association

Steven Cowley became Director at Culham in September 2008 and was appointed as Chief Executive Officer of the United Kingdom Atomic Energy Authority in November 2009. He received his BA from Oxford University and his PhD from Princeton University. Professor Cowley's post-doctoral work was at Culham and he returned to Princeton in 1987. He joined the faculty at the University of California Los Angeles in 1993, rising to the rank of Full Professor in 2000. From 2001 to 2003 he led the plasma physics group at Imperial College, London. He remains a part-time professor at Imperial College. He has published over 100 papers and articles. Professor Cowley co-chaired the US National Academy's decadal assessment of, and outlook for, plasma science: Plasma Science: Advancing Knowledge in the National Interest (National Academy Press 2007). He is a Fellow of the American Physical Society and the Institute of Physics, and the recipient of the IOP's 2012 Glazebrook Medal for leadership in physics. In June 2011, Professor Cowley was appointed to the Prime Minister's Council for Science and Technology and in May 2014 he was elected a Fellow of the Royal Society.


Martin CoxMartin Cox – Director of Strategy and Technology

Martin Cox is responsible for leading future programmes and technology growth, following his appointment in May 2013. Prior to this he oversaw the MAST-Upgrade project and the MAST Project Division. Mr Cox is a theoretical physicist who joined Culham upon graduating, working on plasma modelling. He then became involved in the operation of the experimental facilities. In 1994 he was appointed the Project Manager for the design and construction of the MAST device. From 2000, when UKAEA assumed responsibility for the operation of JET on behalf of the European fusion community, he became manager of Machine Operations Department, overseeing the operation of most of the JET facilities as well as MAST. In 2007 he was appointed Senior Manager for all aspects of JET operation and in 2008 was appointed Assistant Director (Operations), becoming Operations Director following the formation of CCFE in 2009.


David MartinDavid Martin – Operations Director

David Martin became Operations Director in May 2013, having previously been responsible for the Operations and Programme Delivery Division. Mr Martin is a Chartered Mechanical Engineer and Fellow of the Institution of Mechanical Engineers who joined Culham after completing an apprenticeship at Harwell in 1979. Following a role in the build and operation of the Neutral Beam Testbed on JET, he joined the Engineering Group in Neutral Beams before establishing the Engineering Analysis Section. He became Engineering Group Leader and then Department Manager in 2008. In 2011 he was appointed Head of Physics and Engineering Development Division and in 2012 Head of the Operations and Programme Delivery Division. In 2013 he was appointed Operations Director (Operations). He has held other senior engineering posts such as Engineer in Charge and Deputy Chief Engineer. David is committed to staff development and has initiated many of the training schemes presently being run at CCFE – including the apprentice and graduate programmes – helping to achieve accreditation by the Institution of Engineering and Technology, Institution of Mechanical Engineers and the Power Academy.


Catherine PridhamCatherine Pridham – Chief Finance Officer, Director of Support Division, and Secretary of the UK Atomic Energy Authority

Catherine Pridham qualified as a chartered accountant with Arthur Andresen and has worked in the pharmaceutical sector for SmithKline Beecham, Amersham plc and GE Healthcare, where she supported a number of different business areas including a commercial clinical trials business, a large R&D portfolio and a Joint Venture looking to exploit research capabilities commercially with large pharmaceutical companies. Prior to joining CCFE she completed several finance restructuring and process improvement projects for the Ministry of Justice and Department of Transport. She was appointed as CCFE's Head of Finance, Contracts and Integrated Planning in 2012 and became Chief Financial Officer, Director of Support Division and Secretary of the United Kingdom Atomic Energy Authority in January 2014.


Colin ShimellColin Shimell – Head of Assurance Division

Colin Shimell graduated as a mechanical engineer from Imperial College, London and spent the next 17 years as an engineering officer in the RAF. After this he specialised in health, safety and environmental management working in both the public and private sectors with Scottish Power, the Defence Evaluation and Research Agency and QinetiQ. Along the way he collected three masters degrees (an MSc in Explosive Ordnance Engineering, an MA in Health, Safety and Environmental Law and an MBA). He joined Culham in 2010 as Head of Assurance providing assurance to the Board and the Chief Executive that operations comply with all appropriate legal requirements and standards of governance. He is a Fellow of the Institution of Mechanical Engineers and a Chartered Member of the Institution of Occupational Safety and Health.


William MorrisDr William Morris – Chief Scientist

William Morris has responsibility for providing scientific advice to the Executive, initiating new research areas, assessing the programme and enhancing CCFE’s scientific impact. Dr Morris has spent his entire career in fusion research after a physics degree at the University of Oxford. He made wide-ranging physics contributions to the TOSCA, DITE and COMPASS experiments at Culham, to JET and to the PBX and TFTR devices at Princeton University. He led preparatory studies and the physics proposal for the MAST tokamak before becoming head of Culham’s Experiments Department in 1998. More recently, he co-ordinated initial Culham work on ITER diagnostics. Dr Morris has had many roles in EU fusion programme and project committees, starting with the JET Scientific Council, and he is currently an ad personam member of the EFDA Science and Technology Advisory Committee.


Tom ToddTom Todd – Chief Technologist

Tom Todd has amassed considerable experience in fusion technology over a career spanning almost 40 years. His early work at Culham included superconducting devices, stellarators and tokamaks, before a secondment to the DIII-D tokamak at General Atomics in San Diego, US. He then played key roles in Culham's CLEO and Compass experiments, and served on many design reviews for proposed fusion devices in Europe and beyond, including several ITER technical review committees. Further roles followed in tokamak diagnostics and in technology transfer between fusion and industry. Tom Todd was involved in the design of both the START and MAST spherical tokamaks, chairing the MAST Advisory Committee. He moved to the UKAEA Dounreay nuclear decommissioning site in Scotland in 1999 as Manager of the Design Services Department. In 2004 he became Chief Engineer at Culham, responsible for the operational limits of the JET and MAST devices, and was appointed Chief Technologist in 2011. A Fellow of the Institute of Mechanical Engineers, he has a publication list of around 160 papers.