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.


Gwen Parry-Jones OBE

Gwen is a highly experienced CEO 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. 

Gwen is the CEO of Magnox and has led teams and projects in Magnox, Advanced Gas Reactor, Candu, Pressurised Water Reactor and Advance Boiling Water Reactor technologies.

She has worked extensively with senior-level technical, scientific, professional, government, local community, unions and regulatory bodies. Gwen has both UK and international experience across the energy generation sector, including in nuclear, conventional, renewables and storage technologies.

Gwen is the only woman in the UK to have held the post of Station Director at a UK civil nuclear facility and was awarded the honour of Officer of the Order of the British Empire (OBE) in 2015 for her lifetime’s work in services to Science and Technology. 

She has a BSc Hons in Physics from the University of Manchester and an MA in Banking and Finance from the European Business Academy, University College of North Wales. She is a Fellow of the Institute of Physics and an Associate of the Nuclear Institute.



Immediate Past President

John Clarke CEng FNucl

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. 


Honorary Treasurer

Nicola O'Keefe

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.


Former President (2016-2017) 

Neil Thomson CEng FNucl

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.


Chair Assurance Committee

Dr Fiona Rayment OBE CEng CSci FNucl

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.


Chair of the Events Committee

Mark Salisbury

Mark is currently an advisor to Government with the Nuclear Innovation and Research Office. He 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 sits on the Board of Trustees of the Nuclear Institute, of which he is also a Fellow.

Prior to his current role, Mark worked for Horizon Nuclear Power in numerous positions, latterly as the Operations Development Manager; responsible for developing plans for the operational utility intending to operate Horizon’s plants. This included Horizon’s Technical Apprentice Programme and Training Support Partner. Whilst at Horizon he was one of 7 people to successfully complete the initial operator training on the Japanese Advanced Boiling Water Reactor in Japan through consecutive translation! Prior to this, Mark has worked for British Energy at Sizewell B and for Powergen on nuclear, coal and gas-fuelled power stations in Chemistry and Operations.


Clive Smith OBE CEng FNucl

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.

Onshore 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.


Dr Rebecca Weston FNucl

Rebecca is currently Chief Operating Officer 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 overseeing the Volunteer network.


Alastair Laird FNucl

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.


Anindya Sen CEng MNucl

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 the 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 Jadavpur, India.


Dr Juliet Long

Juliet is Head of Radioactive Waste Infrastructure at the Department 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.


Chief Executive Officer of the Nuclear Institute

Sarah Beacock

Sarah became Chief Executive of the Nuclear Institute in February 2017 and brings a wealth of experience from leadership roles within professional membership organisations. She joined the Nuclear Institute from the Energy Institute (EI), where she was Skills and Capability Director responsible for membership, education, training, branches and international activities

She joined the EI (formerly the Institute of Energy) in 2002 and on its merger with the Institute of Petroleum became Professional Affairs Director. In her more recent role, she coordinated all the EI’s IT needs and also led the development of staff capability. Whilst at the EI she also developed four staffed international branches and oversaw the growth in membership and training activity. Prior to joining the EI Sarah worked for 15 years in assessment and accreditation schemes, mainly within examination bodies, professional institutions, universities and the commercial and financial services sectors.

She has a degree in Environmental Science and a Certificate in the Assessment and Accreditation of Prior Experiential Learning.