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BidSonar is an independent index of public-sector opportunities. We aggregate data from official sources and are not affiliated with any procurement body. Data is licensed under the Open Government Licence v3.0 and the EU TED reuse notice.

    ContractsMSSS Box Assembly Manufacturing and Supply
    Open tender

    MSSS Box Assembly Manufacturing and Supply

    Contract value
    £90m
    Published 22 May 2026

    Manufacturing and supply procurement for MSSS box assemblies with detailed requirements available in the ITT template documentation.

    🇬🇧United Kingdom· EnglandPublished 22 May 2026· 4 months agoviaFind a Tender
    Contract value
    £90m
    Published 22 May 2026

    Decision brief

    4 fields
    • Contract value
      est.£90,000,000
      Pounds sterling
    • Closing date
      Rolling
      No closing date published
    • Sector
      Construction
      Browse related listings
    • Location
      🇬🇧United Kingdom
      England

    Lifecycle

    Open

    Open tender — no closing date published. Opened 4 months ago.

    22 May 2026
    Open tender · no closing date published

    Brief

    This procurement opportunity seeks qualified manufacturers to produce and supply box assemblies for the Magnox Swarf Storage Silo (MSSS) system. Suppliers are invited to submit proposals detailing their manufacturing capabilities, quality assurance processes, delivery timelines, and pricing for the complete assembly and delivery of MSSS boxes. Interested parties should consult Sections 1 and 2 of the Invitation to Tender (ITT) Template CFP Document for detailed specifications, technical requirements, terms and conditions, and submission deadlines.

    Track record

    5 awards · 4 winners
    Open field

    No single supplier dominates the field.

    In construction, SELLAFIELD LTD has awarded 5 contracts to 4 suppliers.

    Who wins here
    1. Stainless Metalcraft (Chatteris)2× · 40%
    2. Jasun Technology Limited1× · 20%
    3. PPG Architectural |Coatings UK Ltd1× · 20%
    4. Factair Ltd1× · 20%

    Across construction, the most active winners are SPECIALIST COMPUTER CENTRES PLC, PORTAKABIN LIMITED, Allerton Damp Proofing Limited — the field to beat, or your route in as a partner.

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    Take action
    View tender on sourceFind a Tender

    Full notice and submission process on the publisher's site

    Publisher
    UK Cabinet Office
    Licence
    OGL v3.0
    Source
    find-tender.service.gov.uk
    Record ID
    ocds-h6vhtk-0554ec
    SE
    Buyer
    SELLAFIELD LTD
    Sector
    Construction