Board of Trustees

The Board of Trustees plays an important role in the governance of the Nuclear Institute. Composed of leading business figures and experts within the industry, the Trustees, together with the Executive Team, help set strategic direction and ensure that the Nuclear Institute meets its charitable objectives.

John Clarke CEng FNucI, President 

The President provides leadership to the Board and ensures that Trustees fulfil their duties and responsibilities for the proper governance of the Institute.

John has worked in the nuclear industry for more than 35 years. His executive positions include: Head of Environment, Health, Safety and Quality at the Sellafield Plant in Cumbria, Director of Production for Sellafield Ltd, Managing Director of International Nuclear Services Ltd and most recently CEO of the Nuclear Decommissioning Authority.

John has held a number of non-executive roles over the past 10 years as well as national and international advisory roles. He is a member of the International Atomic Energy Agency Standing Advisory Group on Nuclear Energy which provides advice across the full nuclear spectrum to the IAEA Secretary General. John is a graduate in Chemical Engineering at the University of Sheffield and is a Fellow of the Institution of Chemical Engineers and a Fellow of the Nuclear Institute. 




Gwen Parry-Jones OBE - compressed

Gwen Parry-Jones OBE,  Vice President

 Gwen is a highly experienced director and nuclear operations professional, with outstanding leadership, communication, engagement and influencing skills, with experience at a senior level in project development and delivery, governance, safety, security and nuclear oversight and assurance. Read more 

Nicola O’Keeffe, Honorary Treasurer                                                                                                                       

Nicola is a chartered accountant with extensive knowledge and experience of leading and transforming finance teams. An experienced auditor with foreign language skills, she began her career with Ernst & Young before working at Pilkington Plc and Independent Insurance in internal audit roles. She has worked for Wood for over 17 years and during that time has led teams in both the business and in plc, driving change in the shared service centre, implementing systems and integrating teams following involvement in various acquisitions. She is currently Vice President for Finance and Administration in Wood’s nuclear business which involves overseeing all financial matters including monthly results, budgets and forecasts. She also has responsibility for facilities management for over 20 offices throughout the UK and overseas.

Neil Thomson CEng FNucI, Former President (2016-17)
Neil has 35 years of power generation experience holding senior technical and operational positions including plant management, Chief Engineer, Director and CEO roles and a Directorship of the Institute of Non Destructive Testing. He is currently the Senior Technical Advisor in EDF-Energy Generation, which involves advising EDF-Energy on strategic policy matters covering the generation fleet. He has a BSc (Hons) in Physics and the Chalmers Memorial Prize in Physics. He is a Fellow of the Institute of Physics, Fellow of the Institute of Mechanical Engineers and a member of the government Nuclear Innovation Research Advisory Board (NIRAB), NDA Research Advisory Board and Co-Chairs the National Waste Research Forum.

  Dr Fiona Rayment OBE CEng CSci FNucI, Chair Events Committee/Chair NI Enterprises Ltd.
Fiona is Director with National Nuclear Laboratory (NNL), leading on Government related programmes. She has twenty years' nuclear industry experience, working in technology, operations and strategic planning roles both in the UK and internationally. Fiona is a Chartered Chemist with a BSc (Hons), a PhD in Chemistry and an MBA. She is a Fellow of the Royal Society of Chemistry and the Nuclear Institute, a board member of the National Skills Academy Nuclear, a member of the Fusion Advisory Board and the Office of Nuclear Regulation Advisory Board. She chairs the Nuclear Skills Strategy Group and was made an OBE in the Queen's 2017 honours list. 

Clive Smith OBE CEng FNucI, Chair Membership Committee                                                                                                Clive served in the Royal Navy for 37 years, beginning as an apprentice, rising to the role of Chief Engineer. During his latter period at sea he was awarded an OBE. On shore he held a variety of engineering roles relating to nuclear safety and safety regulation. Clive was seconded to the former Department of Trade and Industry and set up a Nuclear Skills Team within the Ministry of Defence. After leaving the Navy Clive remained engaged in the nuclear skills agenda, initially with Energy Foresight, then as a senior lecturer in the Royal Navy’s nuclear department and with Cogent Sector Skills Council. Clive is currently Principal Engineer with STS Nuclear.

Jack Gritt, President of Women in Nuclear UK (WiNUK)
With 30 years' experience in the nuclear industry, Jack has held a number of positions across executive, operations, program and project management, safety case management and performance and quality. Jack has a BSc (Hons) in Mathematics and is currently the Programme Performance and formerly QA Director at Horizon Nuclear Power. In 2016, she become the President of Women in Nuclear UK (WiN UK). 

Dr Rebecca Weston FNucI
Rebecca is curerently Technical Director at Sellafield Ltd. Prior to this role, she held a number of senior positions at Sellafield in Operations, Technical and Commercial, and has particular expertise in Special Nuclear Material and the back end of the fuel cycle. Rebecca has an Executive MBA, PhD and is a Chartered Physicist, Chartered Engineer, and is a Fellow of the Institute of Physics. She has been a Nuclear Institute volunteer for 10 years, chaired the Cumbria branch for 3 years and served on the Education and Training Committee. She is a board director of the Centre for Leadership Performance. Rebecca is the Trustee responsible for overseering the Volunteer network.

Alastair Laird FNucI
Alastair is currently Director of Laird Consultants Ltd. He has three decades experience in the UK nuclear sector, including with Project Time and Cost International Ltd, and the NDA where he chaired the sanction and national programme governance and reporting processes. He has held technical, operational and senior management roles at six nuclear licensed sites and operational power plants and spent five years at Sellafield. Alastair's main interest is project and risk management, educational programmes and the Young Generation Network. He has a BSc (Hons) in Physics. He was Interim CEO of the Nuclear Institute from August 2016 handing over to Sarah Beacock in April 2017. Alastair is the Trustee responsible for overseeing the work of the Digital and Security Special Interest Groups.


Miranda Kirschel MBE (Founder/First President of WiN UK)
Miranda is part of the Energy Advisory team in EY’s Energy & Assets practice, where she is currently Stakeholder Lead on the SMR TechnoEconomic Assessment for the Department of Energy and Climate Change, including work on NNL’s SMR Feasibility Study. She previously held senior Business Development & Government Relations roles with leading engineering consultancies, Atkins and CH2M HILL where she led business development activities for nuclear new build in the UK and internationally. Miranda was the founder and first President of Women in Nuclear UK (WiNUK) estabalished to improve gender balance, capacity building and the engagement of women in the industry. Miranda is a politics graduate by backgrond, with 15 years professional experience in the nuclear sector.

Anindya Sen CEng MNucI
Anindya works at the Office for Nuclear Regulation (ONR), where he has been since 2011. Prior to the ONR he worked at the Department of Transport in the Dangerous Goods Division, as a Regulator to control and regulate the transport of radioactive and nuclear material within UK. He also worked for five years at British Energy Generation Ltd, across 8  nuclear sites in the UK, as part of a team ensuring the safe and reliable operation. He has a Masters in Engineering from the University of Jadevpur, India.  

Dr Juliet Long
Juliet is Head of Radioactive Waste Infrastructure at the Departent for Business, Energy and Industrial Strategy (BEIS). Her career in the nuclear industry spans the AWE, UKAEA and the Environment Agency. She is a member of the UK Radioactive Substances Policy Group and the NEA’s Radioactive Waste Management Committee. Juliet has a PhD in Geochemistry and is a Chartered Environmentalist. Juliet is the Trustee responsible for overseeing the work of the RadWaste Special Interest Group within the Nuclear Institute.

Mark Lyons 
Mark joined the nuclear industry in 1993 as a graduate with Rolls-Royce plc. His management roles include President of Studsvik UK Limited and Managing Director of L2 Business Consulting Limited. Mark’s technical expertise is with radiological protection, radwaste management, decommissioning, and nuclear licensed site management and operations. He has been a learned member of the Nuclear Institute and its predecessor organisations for over 15 years including serving as a Trustee, Branch Chairman and former Chair of the Education and Training Committee.

 Mark Salisbury


Mark Salisbury

Mark is currently the Operations Development Manager for Horizon Nuclear Power and has been with the firm since 2009. Mark graduated with a degree in Chemistry from the University of Warwick in 2002 and is a Fellow of the World Nuclear University, Royal Society of Chemistry and Institute of Innovation and Knowledge Exchange. He is a Chartered Chemist and Scientist and has been elected to the Board of Trustees of the UK Nuclear Institute, of which he is also a Fellow. Prior to Horizon, Mark has worked on coal and gas fired power stations before joining British Energy where he worked at Sizewell B nuclear Power Station, first as a Chemist and finally as a control room operator. He is one of 7 people in the UK to have successfully completed initial operator training on the Japanese Advanced Boiling Water Reactor in Japan using consecutive translation! Mark currently lives on Anglesey where he is learning to fly light aircraft.

Sarah Beacock, CEO and Secretary to the Board of Trustees
Sarah became Chief Executive of the Nuclear Institute in February 2017 and leads the HQ Team in excecutive responsibilities. She brings a wealth of experience from leadership roles within professional membership organisations. Sarah joined from the Energy Institute, where she was Skills and Capability Director responsible for membership, education, training, branches and international activities. She has a degree in Environmental Science, a Certificate in the Assessment and Accreditation of Prior Experiential Learning and is a Chartered Secretary. See also HQ Team.