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MSSS Boxes Procurement

Sellafield Limited

This public procurement record has 9 releases in its history.

TenderUpdate

08 Jul 2026 at 12:13

UK4 - Tender Notice
TenderUpdate

07 Jul 2026 at 09:23

UK4 - Tender Notice
TenderUpdate

04 Jun 2026 at 09:00

UK4 - Tender Notice
Tender

22 May 2026 at 12:52

UK4 - Tender Notice
Planning

09 Apr 2026 at 15:28

UK2 - Preliminary Market Engagement Notice
Planning

01 Apr 2026 at 15:49

UK2 - Preliminary Market Engagement Notice
Planning

15 Jan 2026 at 09:07

UK2 - Preliminary Market Engagement Notice
Planning

27 Jun 2025 at 14:56

UK2 - Preliminary Market Engagement Notice
Planning

27 Jun 2025 at 11:38

UK1 - Pipeline Notice
Summary of the contracting process

Sellafield Limited, a sub-central government public authority based in Warrington, is currently managing the procurement of MSSS (Magnox Swarf Storage Silo) Boxes. This procurement process is under the tender stage as of 8th July 2026, with a focus on goods, specifically containers for waste material and miscellaneous fabricated products. The project has a competitive flexible procurement method, involving a two-stage process aligned with the Procurement Act 2023. Potential suppliers must register interest by 15th July 2026, and the contract is divided into several lots that include Outer Boxes and MSSS Skips, with delivery to the region designated as UKD11.

This tender presents substantial business growth opportunities, particularly for SMEs specialising in container manufacturing and other fabricated products. With a substantial budget estimated at £108,000,000.01, companies accomplished in technical and economic criteria may find this procurement an excellent avenue to strengthen their market position. Furthermore, the contract period, starting in July 2027 and extending until 2034, promises long-term engagement, making it highly appealing for businesses aiming to secure sustainable contracts and enhance their industry footprint.

How relevant is this notice?

Notice Information

Notice Title

MSSS Boxes Procurement

Notice Description

Procurement for the manufacture and supply of MSSS (Magnox Swarf Storage Silo) Box assemblies. Please refer to Sections 1 & 2 of the ITT Template CFP Document for further information.

Lot Information

Outer Box

Outer Box: PS35M-PS41M

MSSS - Skip

MSSS - Skip: PS27M-PS32M

Box & Skip Lids

Box & Skip Lids Range: PS14-PS17M

Lot 4 - TEST PURPOSES ONLY

Lot 4 - TEST PURPOSES ONLY. This Lot has been created as a test, please note there are only 3 Lots in this procurement

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/064143-2026
Current Stage
Tender
All Stages
Planning, Tender

Procurement Classification

Notice Type
UK4 - Tender Notice
Procurement Type
Standard
Procurement Category
Goods
Procurement Method
Selective
Procurement Method Details
Competitive flexible procedure
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
£90,000,000 £10M-£100M
Lots Value
£90,000,000 £10M-£100M
Awards Value
Not specified
Contracts Value
Not specified

Notice Dates

Publication Date
8 Jul 20261 months ago
Submission Deadline
26 Jun 2026Expired
Future Notice Date
30 Apr 2026Expired
Award Date
Not specified
Contract Period
26 Jul 2027 - 25 Jul 2034 Over 5 years
Recurrence
Not specified

Notice Status

Tender Status
Active
Lots Status
Active
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
Postcode Area
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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