Gerry McGill

Gerry McGill is Senior Vice President of AECOM.

He is a respected senior executive in the Energy and Nuclear sectors of the market and leads the International D&D market sector for AECOM.

He is the Chairman of UK Nuclear Waste Management Ltd, Parent Body Organisation for LLW Repository Ltd.

In addition he is a Board Director of Babcock Dounreay Partnership, Parent Body Organisation for DSRL Ltd (Dounreay) and Board Director for URS E&C UK Ltd.

Gerry has a long history in Cumbria and served as a Board Director of GenII Apprentice Training Company for four years as well as Non-Executive Director of Britain’s Energy Coast and Director of NMP Limited.

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.

Sam Usher

Sam Usher is a Chartered Chemical Engineer, who studied at Nottingham University, achieving an MSc in Engineering Management.


He has 20 years broad experience in the nuclear industry. He started his career with BNFL, working on a variety of waste management, engineering, and operational roles, including 3 years managing the Highly Active Liquor (HALES) plants at Sellafield. He ran NNC’s Radiological & Environmental Consultancy business for 4 years, and in 2005 was appointed head of AMEC NNC’s Programme Management team supporting DEFRA’s (Department for Environment, Food & Rural Affairs) Committee on Radioactive Waste Management, where he ensured the delivery of CoRWM’s (Committee on Radioactive Waste Management) recommendations to government in July 2006.


As Strategic Development Director for AMEC, Sam worked on a number of initiatives, including new nuclear build where he was instrumental in securing the major long term contract for UK licensing and architect engineering implementation with a major European new build utility. He joined Studsvik as Vice President Business Development, and took over as President of Studsvik UK in June 2009.


Sam is a Director of Studsvik UK Ltd, LLW Repository Ltd, UKNWM, and the Nuclear Industry Association.

Robert C Bonner

Bob Bonner has 35 years’ experience in the international nuclear industry. Currently, he is a Group Vice President within AECOM Nuclear & Environment’s International Business Development, leading their drive for nuclear decommissioning business outside the US. He is also a Board Director of UK Nuclear Waste Management, the company that oversees the UK’s Low Level Waste Repository and recently completed two years as Chairman of the British Chemical Engineering Contractors Association (BCECA).

Previously, he was a senior member of the AECOM (was URS at the time) teams that won the UK’s Nuclear Decommissioning Authority’s competitions to run the Sellafield sites and the Dounreay site, leading the commercial negotiations for AECOM in those competitions. He was Executive Director within AECOM’s team at Sellafield, focussed on additional income generation and delivering cost savings by driving through transformation programmes and reorganisations.


Prior to joining AECOM in 2007, Bob worked for BNFL and Westinghouse operating within the UK, Japan (resident for 5 years), Russia and Western/Central/Eastern Europe building successful client relationships (customers, partners & Governments) and meeting/beating sales targets in the areas of nuclear fuel, reactor services and new build. Before that, he held a range of senior positions in Government relations, operations, commissioning and technical/commercial/operations planning.


Bob has a BSc (Hons) in Physics and a post graduate Diploma in Management Studies. He is married with two children and enjoys travelling, mathematical puzzles, DIY, cooking, wining and dining. He is member of MENSA and for exercise plays tennis, Tae Kwon Do and struggles to improve his golf.

Patrick De Montaignac

Patrick is currently Vice President of AREVA Back-End Business Group, leading the Management & Operations business for International Operations. He is also board director of Nuclear Management Partners, the Parent Body Organisation for Sellafield Ltd from the end of 2008 to March 2016. He has more than 24 years of experience in nuclear recycling activities, from engineering to operations and projects. He held various responsibilities such as member of the La Hague Performance Leading Committee and senior facility manager, prior to joining the international business in 2008 as the International Projects Director for La Hague Plant and AREVA project manager for the Sellafield M&O contract. Patrick earned a degree in Engineering at the Ecole Supérieure des Techniques Aéronautiques et de Construction Automobile (ESTACA).