Sellafield Ltd announced on 30 September 2026 that it had identified partners for a new delivery framework, Project and Asset Care Execution (PACE), valued at up to £3.6 billion. The framework is subject to formal award and would cover asset care and asset creation at the Sellafield site, from smaller tasks to larger, more complex projects.

OneAxIoM, a joint venture between Amentum Clean Energy Limited and Mitie Ltd, was identified for Lot 1, supporting process and mechanical handling nuclear facilities across Spent Fuel Management and Retrievals East River. HOCHTIEF Infrastructure UK was named for Lot 2, covering batch specialist and decommissioning facilities across Special Nuclear Materials, nuclear infrastructure and remediation.

The frameworks would run for an initial 9 years with an option for a further 6 years, through to 2041. Mobilisation was set to begin once the contract is formally signed. Sellafield said PACE would improve value for money through common approaches and a scalable, output-focused model, and would aim to increase small and medium enterprise involvement.