Planning

MSSS Boxes Procurement

SELLAFIELD LIMITED

This public procurement record has 5 releases in its history.

Planning

09 Apr 2026 at 14:28

UK2 - Preliminary Market Engagement Notice
Planning

01 Apr 2026 at 14:49

UK2 - Preliminary Market Engagement Notice
Planning

15 Jan 2026 at 09:07

UK2 - Preliminary Market Engagement Notice
Planning

27 Jun 2025 at 13:56

UK2 - Preliminary Market Engagement Notice
Planning

27 Jun 2025 at 10:38

UK1 - Pipeline Notice
Summary of the contracting process

Sellafield Limited is currently in the planning stage for the procurement of boxes for the Magnox Swarf Storage Silo (MSSS). This procurement, identified by Atamis reference C26453, falls under the industry category of containers for waste material and miscellaneous fabricated products. The procurement is a large-scale goods procurement, with a gross value of £114,000,000 and a net amount of £95,000,000. The location for delivery is the region UKD11 within the United Kingdom. Key dates include a future notice date of 30th April 2026, and interested suppliers should note that any questions regarding the procurement need to be submitted by close of business on 17th April 2026, following an extended deadline. The procurement process is being conducted through a planned tender with Sellafield Limited acting as the buying organisation.

This tender offers significant opportunities for businesses, particularly for those specialising in fabrication and the supply of waste material containers. Given the substantial value and duration of the contract, which is expected to run from 1st June 2027 to 1st June 2034, there is ample scope for business growth and long-term partnership. Small and medium-sized enterprises (SMEs) are particularly encouraged to participate, as the procurement is suited to their capabilities and the procurement process is conducted with allowances for SME involvement. Businesses with expertise in quality fabrication and an interest in contributing to public sector projects will find this an advantageous opportunity.

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Notice Information

Notice Title

MSSS Boxes Procurement

Notice Description

Procurement for the MSSS (Magnox Swarf Storage Silo) Boxes

Planning Information

A webinar is now available to view on Atamis (Ref: C26453) for the upcoming MSSS (Magnox Swarf Storage Silo) Boxes Procurement. The general themes of the webinar include: MSSS 3m3 Box Overview Procurement Strategy Terms & Conditions Quality Requirements Social Impact Tendering Hints & Tips There have been several other documents and drawings issued alongside the webinar. Further to this, it is anticipated that the Terms and Conditions will be added to Atamis on Tuesday 7th April. Please take the time to review all of the information provided and if you have any questions, please ensure they are submitted by COP Friday 17th April. All questions will be collectively responded to prior to the tender being issued. Suppliers interested in this webinar should register interest in Atamis reference C26453. https://atamis-2464.my.site.com/s/Welcome

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-h6vhtk-0554ec
Publication Source
Find A Tender Service
Latest Notice
https://www.find-tender.service.gov.uk/Notice/032525-2026
Current Stage
Planning
All Stages
Planning

Procurement Classification

Notice Type
UK2 - Preliminary Market Engagement Notice
Procurement Type
Standard
Procurement Category
Goods
Procurement Method
Not Specified
Procurement Method Details
Not specified
Tender Suitability
SME
Awardee Scale
Not specified

Common Procurement Vocabulary (CPV)

CPV Divisions

44 - Construction structures and materials; auxiliary products to construction (except electric apparatus)

CPV Codes

44400000 - Miscellaneous fabricated products and related items

44613800 - Containers for waste material

Notice Value(s)

Tender Value
£95,000,000 £10M-£100M
Lots Value
Not specified
Awards Value
Not specified
Contracts Value
Not specified

Notice Dates

Publication Date
9 Apr 20262 weeks ago
Submission Deadline
Not specified
Future Notice Date
30 Apr 2026Today
Award Date
Not specified
Contract Period
31 May 2027 - 1 Jun 2034 Over 5 years
Recurrence
Not specified

Notice Status

Tender Status
Planned
Lots Status
Planned
Awards Status
Not Specified
Contracts Status
Not Specified

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
SELLAFIELD LIMITED
Contact Name
Available with D3 Tenders Premium →
Contact Email
Available with D3 Tenders Premium →
Contact Phone
Available with D3 Tenders Premium →

Buyer Location

Locality
WARRINGTON
Postcode
WA3 6GR
Post Town
Warrington
Country
England
Major Region (ITL 1)
TLD North West (England)
Basic Region (ITL 2)
TLD6 Cheshire
Small Region (ITL 3)
TLD61 Warrington
Delivery Location
TLD11 West Cumbria
Local Authority
Warrington
Electoral Ward
Birchwood
Westminster Constituency
Warrington North

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

View full OCDS Record for this contracting process

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The Open Contracting Data Standard (OCDS) is a framework designed to increase transparency and access to public procurement data in the public sector. It is widely used by governments and organisations worldwide to report on procurement processes and contracts. 

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