Official UK procurement notice
3m³ Box Design Optimisation and Development
Authority: Sellafield Limited (Public body)
What is being bought
Published requirement descriptionThe contract covers engineering development, testing and validation activities to support the ongoing optimisation of the existing 3m³ box design currently utilised within the live manufacturing environment, including:
- Development and validation of methods to support refurbishment and reuse activities
- Design and testing of enhanced base configurations to support long term performance
- Development of an alternative reduced height bund configuration to improve operability and process efficiency
- Testing and verification of proposed improvements
- Preparation of supporting manufacturing instructions and technical documentation to enable controlled implementation
This activity relates solely to the existing production design and supports ongoing product and process optimisation within the live manufacturing environment.
The lotProcurement structure
single lot · no lot value publishedProcedure terms & legal framework
From the official record- Procedure method
- Direct award
- Legal basis
- UKPGA · 2023/54 Procurement Act 2023
- Notice status
- Awarded without competition
- Procurement threshold
- Unspecified in notice
- Regulatory regime
- Standard
- Commercial structure
- Stand-alone contract (no framework)
- Competition type
- Direct award (no call for competition)
- GPA / WTO covered
- Unspecified in notice
- Recurring procurement
- Unspecified in notice
- First published
- 26 May 2026, 11:49 BST
- Last source update
- 21 Oct 2026, 10:51 BST
- FTS notice number
2026/S 000-099338- Latest notice
- Contract details notice (UK7)
- Delivery area
- Official registry OCID
ocds-h6vhtk-06a316Find a Tender
- Why no open competition
- Single Suppliers Technical Reasons
- Published justification
It has been determined that competition is absent for technical reasons in accordance with Schedule 5, paragraph 6(a) and 6(b) of the Procurement Act 2023, and that no reasonable alternative or substitute exists.
The scope of this contract is limited to development, optimisation, and validation activities directly associated with the manufacture of 3m³ boxes produced using Stainless Metalcraft Chatteris (SMC)’s established and validated manufacturing process. These activities are inseparable from the existing production route and rely on production‑specific tooling, equipment, processes, and manufacturing knowledge embedded within the live manufacturing environment.
SMC is the incumbent manufacturer and the only organisation with direct access to the current qualified production configuration, accumulated process learning, validated methods of manufacture, and in‑process and completed box inventory. The required activities must be designed, trialled, and validated directly within the live manufacturing environment to maintain compliance with safety, quality, and assurance requirements.
For technical reasons, the scope cannot be delivered by an alternative supplier without establishing an equivalent qualified manufacturing environment, including replication of tooling, equipment, process capability, and validated production controls. Establishing and qualifying such an environment would be incompatible with the requirement to apply improvements directly within the existing production system and would not represent a viable, proportionate, or practicable alternative.
Accordingly, in line with Schedule 5, paragraph 6(a), only SMC can deliver the required services for technical reasons, and in line with paragraph 6(b), no reasonable alternative or substitute exists. The award of this contract to SMC therefore represents the only technically viable means of meeting the authority’s requirements. This contract relates solely to the optimisation of the existing 3m3 production arrangements.
How it was run
Official notice- Submission deadline
- —
Timeline
26 Jun 2026 → 21 Oct 2026 · 2 dates- Standstill ends117 days ago26 Jun 2026, 23:59 BST
- Notice published1 day ago21 Oct 2026, 10:51 BST
Notice history
4 events · 3 releases on Find a Tender · since 26 May 2026- Transparency notice published26 May 2026, 11:49 BSTUK5
- Contract award notice published17 Jun 2026, 09:21 BSTUK6
- Contract signature expected30 Jun 2026, 23:59 BSTscheduled
- Contract details notice published21 Oct 2026, 10:51 BSTUK7
Commercial outcome & contract awards
Published awards, contracts and bid statistics, not a forecast| Awarded to | Value | Date | Status |
|---|---|---|---|
| Stainless Metalcraft (Chatteris) Ltd.SME30 Jun 2026 – 30 Jun 2027 | £300,000 | 26 Mar 2026 | Awarded |
Contracts
3m³ Box Design Optimisation and Development · Stainless Metalcraft (Chatteris) Ltd.SME
- Signed
- 21 Sept 2026
- Value
- £300,000
- Period
- 21 Sept 2026 – 21 Sept 2027
- Status
- active
No agreed KPIs: This contract is below the £5m threshold as set out in 52(1) of the Procurement Act. Project progress will be measured against deliverables linked to verifiable stages of the project.
Contracting authority & participating public bodies
Bidders & participating suppliers
1 commercial party on the notice- STAINLESS METALCRAFT (CHATTERIS) LIMITEDAwarded supplier
Official documents & specifications (3)
Official links; attachments are not copiedNotices published for this procedure
- Contract details notice Contract details notice on Find a Tender
- Contract award notice Contract award notice on Find a Tender
- Transparency notice Transparency notice on Find a Tender