Production / Operations
AtkinsRealis appointed to 15-year nuclear decommissioning and waste framework with Sellafield Ltd.

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Executive Summary
- AtkinsRéalis has been awarded three lots in Sellafield Ltd.’s £4.6 billion Decommissioning and Nuclear Waste Partnership framework, covering remediation, waste integration, and pond retrieval services.
- The appointment is structured through two joint‑venture arrangements (with Altrad Support Services Ltd; and with Amentum Clean Energy & Westinghouse Electric Company UK Ltd) for an initial nine‑year term, renewable for up to six additional years (through 2040).
- The contract represents a long‑term, high‑value revenue stream for AtkinsRéalis in the European nuclear decommissioning market.
Key Details
- Framework Value: Up to £4.6 billion across four lots; AtkinsRéalis will execute three of those lots.
- Contract Duration: Initial nine years with an option to extend an additional six years, ending in 2040.
- Lots Awarded:
- Lot 1 – Remediation Partner (joint venture with Altrad Support Services Ltd).
- Lot 4 – Integrated Nuclear Waste Partner (joint venture with Altrad Support Services Ltd).
- Lot 2 – Pond Retrievals Partner (joint venture with Amentum Clean Energy and Westinghouse Electric Company UK Ltd).
- Scope of Work:
- Remediation and retrieval activities.
- Technical services including safety case development, engineering design, construction delivery, and demolition.
- Waste management services covering integrated nuclear waste handling and pond retrievals.
- Strategic Significance: Strengthens AtkinsRéalis’s position in the European nuclear decommissioning sector; leverages over 30 years of prior collaboration with Sellafield Ltd.
- Financial Impact: While specific revenue figures are not disclosed, the maximum contract value (£4.6 bn) indicates a material contribution to future earnings.
Notable Quotes
“The safe and efficient decommissioning and waste management of legacy nuclear sites is vital for future generations… AtkinsRéalis will bring its significant expertise in the field…” – Ian L. Edwards, President & CEO, AtkinsRéalis
“This significant appointment is testament to the longstanding relationships our engineering and waste management teams have built with Sellafield Ltd.” – Joe St. Julian, President, Nuclear, AtkinsRéalis
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Jun 25, 2026 · 07:45