Dennis Thompson


Dennis Thompson has over 25 years experience in the nuclear industry with a predominant focus on nuclear operations and low level waste management.   He started his career as a startup (commissioning) engineer with DuPont at the Savannah River Site in South Carolina, USA. He became part of a startup team responsible for commissioning the Saltstone facility, a facility designed to treat, immobilise, and dispose of large volumes of liquid low level radioactive waste. Once commissioned, he moved into operations and eventually became the Facility Manager.   In addition to operations management, Dennis has moved into a variety of key management positions covering a range of disciplines including training, procedures, quality assurance, and project management.

Dennis moved to the UK to take up the Business Manager role at the LLWR, responsible for finance, project controls, IT, and human resources.  He was asked to extend his UK assignment by assuming the Managing Director role which is the role he currently holds.

Dennis earned a Bachelor of Science in Civil Engineering from the University of South Carolina and later earned a Masters in Business Administration from the same university.

Martin Walkingshaw

Martin Walkingshaw has 30 years experience in the nuclear industry.  He began his career as an Engineering Apprentice specialising in Industrial Measurement and Control Systems

Martin’s early years were spent at Sellafield working in the engineering, maintenance and commissioning teams associated with Magnox Reprocessing operations; Ponds/Decanning, Chemical Separation and Fuel Handling Plants.  He has been directly involved in commissioning and operational ramp up of the first Intermediate Level Waste Encapsulation Plant at Sellafield. Resulting in his appointment as Engineering Manager for the facility in 1993.

Following secondment to BNFL’s Corporate Engineering Directorate in Warrington, Martin returned to a front line role at Sellafield when he was appointed as E&I Commissioning Support Manager for the High Level Waste Vitrification Line 3, then under construction.  He then moved across into the operations arena, and was eventually appointed Operations Support Manager for the combined High Level Waste Vitrification Lines 1, 2 and 3 organisations.

Martin joined LLW Repository Ltd in 2007, where he became part of the team that successfully introduced a range of new waste management routes and services for the UK’s low level waste producers.  

Martin was appointed to the SLC Board in May 2011. He is also a member of the Board’s Audit Sub-Committee. 

Nigel Lister

SLC Board member and Lead Team Member - Head of Safety, Regulatory Liaison & Governance

Nigel Lister is the Head of Safety and Regulatory Liaison at the LLWR Site, with responsibility for leading the Site Environment, Health, Safety and Quality (EHS&Q) Teams. He has been an Executive Director on the SLC Board since the formation of LLW Repository Ltd in 2007.

A Physics Graduate from the University of Leeds, Nigel started his career at Sellafield in 1991 on the BNFL Graduate training scheme as a health physicist. He carried out a number of Safety Adviser and Radiation Protection Adviser (RPA) roles on the Sellafield Site in the early years of his career including as an RPA for engineering projects in Separation area and RPA for Thorp Reprocessing Plants.

His first senior role was the Head of EHS&Q for the Thorp Reprocessing Plants in 2000. This role expanded to cover the provision of safety advice across all production operations on Sellafield Site, including Magnox Reprocessing, MOX, Thorp and High Level Waste Plants, bringing together a number of separate teams.

Nigel came to LLWR in June 2006 as part of the project team to establish the Site as a stand-alone Site Licence Company and led the work to obtain the new Nuclear Site Licence and Environmental Authorisation. He was part of the original SLC board and was offered the opportunity to remain as Executive Director when UKNWM took over Management of the Site in 2008.

Neil Baldwin

Neil has almost 40 years’ experience in the nuclear industry. He started his career at Sellafield as a graduate chemical engineer and went on to become Director of Thorp and the High Level Waste Plants. In 2004 he left Sellafield to become Director of Operations for Magnox Ltd eventually becoming the Managing Director.

During his time in charge Magnox were awarded the Sir George Earle trophy, ROSPA’s most prestigious award for industrial safety. In addition to his role as a Director of LLWR he also serves as an Independent member of EDF Energy’s Nuclear Liabilities Committee, focused on the future decommissioning of the UK’s AGR fleet. He was awarded an MBE in 2015 for his service to the industry.

Alastair Scrimgeour

Alastair Scrimgeour is a Chartered Accountant and was a partner for 24 years in Deloitte LLP and predecessor partnerships, specialising in Corporate Finance.

During much of his career he has specialised in the nuclear industry.  He led the team that acted as reporting accountant on both the privatisation and the subsequent restructuring of British Energy.  He led the professional services team that advised Her Majesty's Government (HMG) and BNFL over a period of 10 years on the restructuring of BNFL and the UK civil nuclear industry which resulted in the formation of the NDA and the current SLC structure.

Following the formation of the NDA, he led the team that became financial, accounting, tax and pensions advisers to the NDA.  He also led the vendor due diligence team on the disposal of UKAEA to Babcock and advised DECC on the setting up of Funded Decommissioning Plans.  He has also been involved in a number of new build projects.

Outside of his nuclear work, he has worked with many private and public sector companies on the development and execution of their strategies as well as with many investment banks and private equity companies. 

Alastair is on the Board of the Nuclear Industry Association and is Chairman of LLWR's Audit Committee.

Paul Pointon

Paul, a Chartered Civil Engineer, is Deputy Managing Director at the Low Level Waste Repository.

He  is a Senior Project Director with a strong engineering background and Operations and Project Management experience of major Civil Engineering Projects in a wide variety of fields; Nuclear, Water & Wastewater, Rivers, Industry and Transport (Road and Rail).

In 2004 he joined URS Washington Division, forerunner to AECOM Nuclear & Environment International, and was Project Manager responsible for the management of the multi-discipline team undertaking the Feasibility Study for the design, construction and operation of an extension of the low level nuclear waste storage facility, near Drigg.

The following year he was Senior Project Manager responsible for setting up the programme of work for the decommissioning of B204 Building at Sellafield.

He went on to fill several senior roles at the Low Level Waste Repository, including Site Project Delivery Manager responsible for the project management teams delivering Vault 9, and Technical Programme Delivery Manager, before his appointment as Head of Site in 2012.

Paul is a Member of both the Institution of Civil Engineers and the Association for Project Management. He was appointed Deputy MD in February 2017.

Amy Gill-Weatherburn

Amy has 20 years' experience in the Nuclear Industry in Programme Controls, Business and Finance roles.

She started her career working for Gleeds, global property and construction consultants, where she was sponsored to study for a BSc in Commercial Management and Quantity Surveying. She then went on to the UK Atomic Energy Authority before joining the Nuclear Decommissioning Authority just as it was created in March 2005. Amy held positions covering financial, programme controls and commercial oversight of several nuclear sites within the UK fleet, including Sellafield, Chapelcross and LLWR.

In November 2010, Amy joined URS (now AECOM) and spent 5 years as a member of the Lead Team at LLWR, in the Head of Business Management position, heading up Finance, Programme Controls and IT.

In 2015, Amy returned to AECOM as Business Director where she is currently responsible for the Business and Financial Operations of AECOM Management Services Group, Nuclear & Environment Business in the United Kingdom, Europe and Far East, including the AECOM Corporation shareholdings for the Low Level Waste Repository (LLWR) and Dounreay Site. Amy also performs a governance role for the UK Nuclear Waste Management Ltd Board of Directors (the LLWR Parent Body Organisation) and sits on the Finance & Audit Sub-Committee of Dounreay's Board of Directors. 


Chris Hannon

Chris is the Deputy Managing Director of Studsvik Ltd and a Non-Executive Director of LLWR Ltd.

He began his career with BNFL at Berkeley Centre, working on the radiological characterisation of both Intermediate Level Waste and Low Level Waste.

Chris joined Studsvik in 2006 to enhance and expand their characterisation business. He led the Waste Consultancy Team between 2011 and 2014 before moving to focus on growing Studsvik's international NORM Business, with particular emphasis on the UK and Middle Eastern markets. Between 2008 and 2015 Chris was part of the UK Clearance and Exemption Working Group which published guidance on the underlying principles for working with Out of Scope waste.

He took over as Deputy Managing Director of Studsvik in January 2017 and was appointed to the LLWR Board in June of the same year.