About Nucleus

The Nucleus team came together to provide solutions to the NDA Estate on the Specialist Nuclear Services (SNS) framework, lots 1 to 4. Nucleus’ unique structure provides access to technical experts, who are able to respond rapidly and appropriately to the UK nuclear industry’s most complex challenges.

Why work with Nucleus?

  • Dynamic and responsive
  • Specialists in their field
  • Located throughout the UK
  • Added value through our collaborative behaviours
  • Integrated and independent solutions for the whole of the nuclear life cycle


The Nucleus team can provide a number of services, including:

Lot 1: Laboratory R&D

  • Active and inactive trials
  • Laboratory-scale to full-scale
  • Wasteform behaviour
  • Disposal system behaviour

Lot 2: Desk-based R&D

  • Research and modelling
  • Disposal system evolution
  • Post-closure performance
  • Software solutions and model development

Lot 3: Decommissioning and Waste Management

  • Options Assessment including BAT
  • Decommissioning Planning
  • Strategy Development
  • Letters of Compliance and Disposability

Lot 4: Safety Case

  • Management and authorship
  • Criticality and shielding
  • Engineering substantiation
  • Hazard management