Planning

Preliminary Market Engagement - MBGWS Boxes

SELLAFIELD LIMITED

This public procurement record has 2 releases in its history.

Planning

29 May 2026 at 14:04

UK2 - Preliminary Market Engagement Notice
Planning

20 Jan 2026 at 11:37

UK1 - Pipeline Notice
Summary of the contracting process

Sellafield Limited has issued a preliminary market engagement notice to assess the capability and interest of suppliers in the production and delivery of Miscellaneous Beta Gamma Waste (MBGW) Boxes. This procurement falls under the industry categories of nuclear waste packaging and steel, with a focus on goods. The buying organisation, Sellafield Limited, is located in Warrington, UK, and operates under the classification of a sub-central public authority. The procurement stage is currently in the planning phase, with an engagement process seeking supplier feedback due by 12 June 2026. The engagement aims to understand the viability of a single supplier model, as well as mobilisation and delivery timelines, to inform the procurement strategy scheduled for further notice on 1 November 2026.

This procurement presents significant opportunities for businesses involved in manufacturing and supplying complex engineered goods, particularly those with experience in the nuclear sector. Small and medium-sized enterprises (SMEs) might find this tender attractive due to its suitability criteria, which supports SME participation. With an anticipated contract value of £12 million to £14.4 million and a delivery demand of 11 to 33 units per annum over a five-year contract, this procurement could lead to substantial business growth. Firms with robust supply chain capabilities and experience in product introduction methodologies, such as Advanced Product Quality Planning (APQP), are well-positioned to compete successfully. The requirement for validating delivery models and mobilisation timelines further indicates an opportunity for businesses with strong project management skills to collaborate with Sellafield Ltd in aligning technical and commercial strategies.

Find more tenders on our Open Data Platform.
How relevant is this notice?

Notice Information

Notice Title

Preliminary Market Engagement - MBGWS Boxes

Notice Description

This notice builds on the previous Preliminary Market Engagement (UK2 Notice reference: 004728-2026), published on 20 January 2026, which sought to assess supplier capability and market interest in the manufacture and supply of Miscellaneous Beta Gamma Waste (MBGW) Boxes. That engagement demonstrated a strong level of market interest and identified a number of capable suppliers. Sellafield Ltd is now undertaking a further phase of market engagement to refine its understanding of supplier capacity, mobilisation requirements, and commercial considerations in advance of finalising the procurement strategy. The current preferred delivery model is for the full assembly of MBGW Boxes by a single supplier. This engagement is intended to gather targeted feedback to validate this approach and inform the design of the forthcoming procurement. The requirement is expected to include the manufacture, assembly, testing, and delivery of Miscellaneous Beta Gamma Waste (MBGW) Boxes in accordance with Sellafield Ltd specifications and requirements. The anticipated demand profile remains within a range of approximately 11 to 33 units per annum, subject to confirmation. PLEASE NOTE THIS IS NOT A CALL FOR COMPETITION

Planning Information

Responding to the Expression of Interest To respond to this expression of interest, interested parties should respond in the Nuclear Decommissioning Authority (NDA) tendering portal Atamis https://atamis-2464.my.site.com/s/Welcome To access Click on View our Live Opportunities and search for C31446. Purpose of Engagement Sellafield Ltd is seeking to: -Confirm the attractiveness of a full assembly (single supplier) delivery model -Understand supplier mobilisation requirements and constraints -Assess whether proposed delivery timelines are achievable -Validate whether the anticipated volume range is commercially attractive Suppliers are invited to provide responses to the following questions: 1. Full Assembly Model Based on the information available, would your organisation consider a full assembly (single supplier) model to be an attractive opportunity? Please set out any conditions or factors that would influence your interest. 2. Mobilisation Period What mobilisation period would your organisation typically require for a requirement of this nature? Please outline the key activities that would drive this timeline (e.g. tooling, design validation, supply chain, recruitment, approvals). 3. 18-Month Mobilisation Feasibility Do you consider an 18-month mobilisation period to be sufficient to establish capability and commence compliant production? Please provide supporting rationale. If not, please indicate what mobilisation period you would consider achievable. 4. Volume and Demand Profile Is the anticipated volume range (circa 11–33 units per annum) considered commercially attractive? Please provide any comments on minimum viable volumes, batching, or production considerations. 5. Product Introduction Approach and Experience What experience does your organisation have in introducing new or technically complex products into production? Please outline any structured approaches or methodologies (e.g. New Product Introduction (NPI), Advanced Product Quality Planning (APQP), or similar) that you typically use, and how these support mobilisation and transition into production. 6. Additional Comments Please provide any additional observations that may help inform the procurement strategy, including risk areas or key considerations. Interested parties should respond to this by 12 June 2026.

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-h6vhtk-0609b7
Publication Source
Find A Tender Service
Latest Notice
https://www.find-tender.service.gov.uk/Notice/050919-2026
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

14 - Mining, basic metals and related products

90 - Sewage, refuse, cleaning and environmental services

CPV Codes

14622000 - Steel

90521520 - Packaging of intermediate level nuclear waste

Notice Value(s)

Tender Value
£12,000,000 £10M-£100M
Lots Value
Not specified
Awards Value
Not specified
Contracts Value
Not specified

Notice Dates

Publication Date
29 May 20261 weeks ago
Submission Deadline
Not specified
Future Notice Date
1 Nov 20265 months to go
Award Date
Not specified
Contract Period
30 Sep 2028 - 30 Sep 2033 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
Not specified
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

Download

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. 

{
    "tag": [
        "compiled"
    ],
    "id": "ocds-h6vhtk-0609b7-2026-05-29T15:04:43+01:00",
    "date": "2026-05-29T15:04:43+01:00",
    "ocid": "ocds-h6vhtk-0609b7",
    "initiationType": "tender",
    "planning": {
        "documents": [
            {
                "id": "004721-2026",
                "documentType": "plannedProcurementNotice",
                "noticeType": "UK1",
                "description": "Pipeline notice on Find a Tender",
                "url": "https://www.find-tender.service.gov.uk/Notice/004721-2026",
                "datePublished": "2026-01-20T11:37:43Z",
                "format": "text/html"
            },
            {
                "id": "050919-2026",
                "documentType": "marketEngagementNotice",
                "noticeType": "UK2",
                "description": "Preliminary market engagement notice on Find a Tender",
                "url": "https://www.find-tender.service.gov.uk/Notice/050919-2026",
                "datePublished": "2026-05-29T15:04:43+01:00",
                "format": "text/html"
            }
        ],
        "milestones": [
            {
                "id": "engagement",
                "type": "engagement",
                "description": "Responding to the Expression of Interest To respond to this expression of interest, interested parties should respond in the Nuclear Decommissioning Authority (NDA) tendering portal Atamis https://atamis-2464.my.site.com/s/Welcome To access Click on View our Live Opportunities and search for C31446. Purpose of Engagement Sellafield Ltd is seeking to: -Confirm the attractiveness of a full assembly (single supplier) delivery model -Understand supplier mobilisation requirements and constraints -Assess whether proposed delivery timelines are achievable -Validate whether the anticipated volume range is commercially attractive Suppliers are invited to provide responses to the following questions: 1. Full Assembly Model Based on the information available, would your organisation consider a full assembly (single supplier) model to be an attractive opportunity? Please set out any conditions or factors that would influence your interest. 2. Mobilisation Period What mobilisation period would your organisation typically require for a requirement of this nature? Please outline the key activities that would drive this timeline (e.g. tooling, design validation, supply chain, recruitment, approvals). 3. 18-Month Mobilisation Feasibility Do you consider an 18-month mobilisation period to be sufficient to establish capability and commence compliant production? Please provide supporting rationale. If not, please indicate what mobilisation period you would consider achievable. 4. Volume and Demand Profile Is the anticipated volume range (circa 11-33 units per annum) considered commercially attractive? Please provide any comments on minimum viable volumes, batching, or production considerations. 5. Product Introduction Approach and Experience What experience does your organisation have in introducing new or technically complex products into production? Please outline any structured approaches or methodologies (e.g. New Product Introduction (NPI), Advanced Product Quality Planning (APQP), or similar) that you typically use, and how these support mobilisation and transition into production. 6. Additional Comments Please provide any additional observations that may help inform the procurement strategy, including risk areas or key considerations. Interested parties should respond to this by 12 June 2026.",
                "dueDate": "2026-06-12T23:59:59+01:00",
                "status": "scheduled"
            }
        ]
    },
    "parties": [
        {
            "id": "GB-PPON-PWYP-8439-MZWY",
            "name": "Sellafield Limited",
            "identifier": {
                "scheme": "GB-PPON",
                "id": "PWYP-8439-MZWY"
            },
            "address": {
                "streetAddress": "Hinton House, Birchwood Park Avenue",
                "locality": "Warrington",
                "postalCode": "WA3 6GR",
                "country": "GB",
                "countryName": "United Kingdom",
                "region": "UKD61"
            },
            "contactPoint": {
                "name": "Karolina Kosik",
                "email": "karolina.kosik@sellafieldsites.com"
            },
            "roles": [
                "buyer"
            ],
            "details": {
                "url": "https://www.gov.uk/government/organisations/sellafield-ltd",
                "classifications": [
                    {
                        "id": "publicAuthoritySubCentralGovernment",
                        "scheme": "UK_CA_TYPE",
                        "description": "Public authority - sub-central government"
                    }
                ]
            }
        }
    ],
    "buyer": {
        "id": "GB-PPON-PWYP-8439-MZWY",
        "name": "Sellafield Limited"
    },
    "tender": {
        "id": "C31446",
        "legalBasis": {
            "id": "2023/54",
            "scheme": "UKPGA",
            "uri": "https://www.legislation.gov.uk/ukpga/2023/54/contents"
        },
        "title": "Preliminary Market Engagement - MBGWS Boxes",
        "description": "This notice builds on the previous Preliminary Market Engagement (UK2 Notice reference: 004728-2026), published on 20 January 2026, which sought to assess supplier capability and market interest in the manufacture and supply of Miscellaneous Beta Gamma Waste (MBGW) Boxes. That engagement demonstrated a strong level of market interest and identified a number of capable suppliers. Sellafield Ltd is now undertaking a further phase of market engagement to refine its understanding of supplier capacity, mobilisation requirements, and commercial considerations in advance of finalising the procurement strategy. The current preferred delivery model is for the full assembly of MBGW Boxes by a single supplier. This engagement is intended to gather targeted feedback to validate this approach and inform the design of the forthcoming procurement. The requirement is expected to include the manufacture, assembly, testing, and delivery of Miscellaneous Beta Gamma Waste (MBGW) Boxes in accordance with Sellafield Ltd specifications and requirements. The anticipated demand profile remains within a range of approximately 11 to 33 units per annum, subject to confirmation. PLEASE NOTE THIS IS NOT A CALL FOR COMPETITION",
        "items": [
            {
                "id": "1",
                "additionalClassifications": [
                    {
                        "scheme": "CPV",
                        "id": "90521520",
                        "description": "Packaging of intermediate level nuclear waste"
                    },
                    {
                        "scheme": "CPV",
                        "id": "14622000",
                        "description": "Steel"
                    }
                ],
                "deliveryAddresses": [
                    {
                        "region": "UK",
                        "country": "GB",
                        "countryName": "United Kingdom"
                    },
                    {
                        "region": "UK",
                        "country": "GB",
                        "countryName": "United Kingdom"
                    }
                ],
                "relatedLot": "1"
            }
        ],
        "mainProcurementCategory": "goods",
        "lots": [
            {
                "id": "1",
                "suitability": {
                    "sme": true
                },
                "contractPeriod": {
                    "startDate": "2028-10-01T00:00:00+01:00",
                    "endDate": "2033-09-30T23:59:59+01:00"
                },
                "status": "planned"
            }
        ],
        "communication": {
            "futureNoticeDate": "2026-11-01T23:59:59Z"
        },
        "status": "planned",
        "value": {
            "amountGross": 14400000,
            "amount": 12000000,
            "currency": "GBP"
        },
        "aboveThreshold": true
    },
    "language": "en"
}