Find a TenderAwarded without competitionContract details notice
Published 26 May 2026, 11:49 BST

Official UK procurement notice

3m³ Box Design Optimisation and Development

Official notice

Authority: Sellafield Limited (Public body)

Direct award
Awarded value£300,000published award · exc. VAT
Awarded 26 Mar 2026no call for competition
Awarded to Stainless Metalcraft (Chatteris) Ltd.

What is being bought

Published requirement description

The 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 published

Procedure 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
North West (UKD11)
Official registry OCID
ocds-h6vhtk-06a316 Find 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
  1. Standstill ends117 days ago
    26 Jun 2026, 23:59 BST
  2. Notice published1 day ago
    21 Oct 2026, 10:51 BST

Notice history

4 events · 3 releases on Find a Tender · since 26 May 2026
  1. Transparency notice published
    26 May 2026, 11:49 BST
    UK5
  2. Contract award notice published
    17 Jun 2026, 09:21 BST
    UK6
  3. Contract signature expected
    30 Jun 2026, 23:59 BST
    scheduled
  4. Contract details notice published
    21 Oct 2026, 10:51 BST
    UK7

Commercial outcome & contract awards

Published awards, contracts and bid statistics, not a forecast
Awards 1
Awarded value £300,0001 award exc. VAT
Contracts signed 1latest 21 Sept 2026
Awarded toValueDateStatus
Stainless Metalcraft (Chatteris) Ltd.SME30 Jun 2026 – 30 Jun 2027£300,00026 Mar 2026Awarded

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

Sellafield Limited

Contracting authorityPublic authority - sub-central government GB-PPON: PWYP-8439-MZWY Hinton House, Birchwood Park Avenue, Warrington, North West, WA3 6GRContact name, email

Bidders & participating suppliers

1 commercial party on the notice
  • STAINLESS METALCRAFT (CHATTERIS) LIMITEDAwarded supplierGB-COH: 02506189 Chatteris Engineering Works, 15 Honeysome Road, Chatteris,, Cambridgeshire,, East of England, PE16 6SAContact email

Official documents & specifications (3)

Official links; attachments are not copied

Notices published for this procedure

  • Contract details notice contractContract details noticeUK7Contract details notice on Find a Tender
  • Contract award notice awardContract award noticeUK6Contract award notice on Find a Tender
  • Transparency notice awardTransparency noticeUK5Transparency notice on Find a Tender