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Design support to remediation and security

Sellafield Ltd

This public procurement record has 5 releases in its history.

PlanningUpdate

10 Aug 2026 at 11:40

UK1 - Pipeline Notice
PlanningUpdate

10 Aug 2026 at 11:19

UK1 - Pipeline Notice
PlanningUpdate

13 May 2025 at 12:30

UK1 - Pipeline Notice
PlanningUpdate

13 May 2025 at 12:22

UK1 - Pipeline Notice
Planning

09 May 2025 at 14:26

UK1 - Pipeline Notice
Summary of the contracting process

Sellafield Limited intends to procure design support services for remediation and security at the Sellafield site. The scope covers intelligent-client support and oversight, development before the Outline Business Case, early design strategy, and niche nuclear and specialist advice. This includes remediation and clean-up, safe treatment and storage of radioactive waste, and the Sellafield Security Enhancements Programme. The work is classified as design support services (CPV 79933000) and is being procured as a service. Delivery is identified across the United Kingdom, with the substantive work focused on Sellafield’s site and programmes. The procurement has one planned lot, described as suitable for small and medium-sized enterprises. The buyer is Sellafield Limited, a public authority based in Warrington.

This procurement is at the planning stage: Sellafield Limited has announced an intention to procure, rather than invited bids. The expected route is a call-off through the Crown Commercial Service RM6356 framework, using a framework agreement and an above-threshold procedure under the Procurement Act 2023. The estimated value is £26 million excluding VAT, or £31.2 million including VAT. The planned contract period is 1 October 2026 to 30 September 2030. A further notice is expected on 11 August 2026, indicative of the buyer’s timetable rather than a tender deadline. The procurement strategy has changed from ten individual mini-competitions to three competition tranches with sub-lots. The tranches cover plant-facing design office disciplines, site and remediation support, studies and engineering, and safety case capability.

The work is likely to suit suppliers able to provide multidisciplinary design and intelligent-client support in a highly regulated nuclear environment. Relevant preparation should include capability in civil, structural and architectural design; mechanical, electrical and instrumentation engineering; manufactured products and process design; site project-office client support; remediation and legacy projects; retrievals; infrastructure front-end enabling; studies and engineering; and safety cases. Suppliers with experience of Sellafield-type remediation, radioactive-waste treatment and storage, nuclear safety, security enhancement or early business-case development will be well placed. The buyer has indicated that the procurement is suitable for SMEs, although participation will depend on access to the RM6356 framework and the requirements of the later tranche competitions. Businesses should prepare evidence of specialist nuclear competence, design governance and effective client oversight.

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Notice Information

Notice Title

Design support to remediation and security

Notice Description

* Intelligent client support and oversight * Front End pre-Outline Business Case development and early design strategy * Niche nuclear and specialist support to: 1. Remediation clean up the Sellafield Site and safe treatment and storage capability for waste 2. Sellafield Security Enhancements Programme This will be procured via Crown Commercial Service framework RM6356.

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-h6vhtk-050fd1
Publication Source
Find A Tender Service
Latest Notice
https://www.find-tender.service.gov.uk/Notice/075640-2026
Current Stage
Planning
All Stages
Planning

Procurement Classification

Notice Type
UK1 - Pipeline Notice
Procurement Type
Framework
Procurement Category
Services
Procurement Method
Not Specified
Procurement Method Details
Not specified
Tender Suitability
SME
Awardee Scale
Not specified

Common Procurement Vocabulary (CPV)

CPV Divisions

79 - Business services: law, marketing, consulting, recruitment, printing and security

CPV Codes

79933000 - Design support services

Notice Value(s)

Tender Value
£26,000,000 £10M-£100M
Lots Value
Not specified
Awards Value
Not specified
Contracts Value
Not specified

Notice Dates

Publication Date
10 Aug 20261 months ago
Submission Deadline
Not specified
Future Notice Date
11 Aug 2026Expired
Award Date
Not specified
Contract Period
1 Oct 2026 - 30 Sep 2030 4-5 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 Ltd
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
Not specified
Local Authority
Warrington
Electoral Ward
Birchwood
Westminster Constituency
Warrington North

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

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