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#h6vhtk-050366
Published 16 Sept 2026, 14:51 BST
Official UK Procurement Procedure

Supply of HEPA Filters — UK Public Procurement Procedure

Authority:Sellafield Limited(Public Body)
Framework Agreement
Multi-lot
goods
Competitive flexible procedure
Above threshold
WTO GPA (GPA)
SME suitable
Sectors:
CPV 42
Framework ceiling (notional)
£6,500,000
Notional ceiling exc. VAT — not attributable revenue · 4 value updates in timeline
Submission deadline
26 Oct 2026, 12:00 GMT
39d 21h leftTypical competition: 1 bidThis authority · all categories · 24 months · n=51 bid reports
Clarification Cut-Off
26 Oct 2026, 12:00 GMT
Tender enquiry deadline · 2 lots
Contract duration
5 yrs
Starts 1 Jul 2027, 00:00 BST

What is being bought & procurement scope

Procurement Scope & Specification
Tenderline summary generated from the published notice
Executive Summary: Sellafield Limited: "Supply of HEPA Filters". Published status: active. Published value: £6,500,000. 2 published lots. Recorded submission deadline: 26 Oct 2026, 12:00 GMT. Published submission portal: atamis-2464.lightning.force.com.

Official Requirement Description:

The Detailed Design, Manufacture, Test, Supply and Delivery of Nuclear Grade Air Filters, including High Efficiency Particulate Air (HEPA) Filters to the NDA Operating Companies; Sellafield Ltd, NRS and NRS Dounreay. All HEPA Filter items produced must meet the relevant Sellafield Ltd specifications. The items will be ordered as required as call off orders and there is no guarantee of volumes. There is a requirement for type testing across the goods specifications. Full specifications and procurement documents for this tender are available to interested parties who register on Atamis project C8489, details on how to do this are contained within this notice. A preliminary Market Engagement (UK2) Notice has not been issued ahead of this Tender (UK4) Notice, this is because a Prior Information Notice (PIN) was issued in January 2025 to inform the market of a Market Engagement Event that was held, a link to this notice is contained in the following link https://www.find-tender.service.gov.uk/Notice/001878-2025 The event was run in May 2025. A copy of the presentation slides delivered during this market engagement event have been uploaded into Atamis Project C8489, under the Documents Folder 0. Market Engagement.

Lots and requirements (2)

Procurement Structure
Published by the contracting authority
  • Lot 1 · #1
    Lot 1
    active
    Published value£270,000
    Lot 1 – Smaller Basket comprising of the following items: • Mini Pleat HEPA Filters. Unmodified. Type I & II • Large Circular Filters (Internal and External Seal) stainless steel case • Large Circular Filters (Internal Seal) PU case. • In line canister filters (flanged) • • Push through HEPA filters (stainless steel case)
    Contract period:
    1 Jul 2027 — 30 Jun 2032 (5 yrs)
    Eligibility:
    SME eligible
  • Lot 2 · #2
    Lot 2
    active
    Published value£4,100,000
    Lot 2 – Larger Basket comprising of the following items: • Deep pleat HEPA Filters (with and without features) • Mini-pleat filters modified with lifting features & attachments • Large Circular HEPA filters mild steel (Internal & external Seal) • In line Canister HEPA Filters (screwed) • In line Canister HEPA Filters (painted mild steel) • Specialist HEPA Filters & accessories • Small HEPA Filters
    Contract period:
    1 Jul 2027 — 30 Jun 2032 (5 yrs)
    Eligibility:
    SME eligible

Published award criteria & contract terms

From this notice
Only criteria and terms published on this notice. Conditions of participation in the tender pack are not inferred.
Evaluation weighting
Quality: 120
Price: 60
Social value: 20
Same published split on all 2 lots.Published as relative weights, not percentage points.
Published sub-criteria
  • Technical60
  • Technical60
  • Commercial30
  • Commercial30
  • Social Value10
  • Social Value10
Published terms
Contract duration5 yrs

Procedure terms & legal framework

Procedure methodCompetitive flexible procedureLegal basis
UKPGA · 2023/54
Procurement Act 2023
Procurement categorygoods
Notice statusOpen for tenderProcurement threshold
Above threshold
(FTS publication)
Regulatory regimeStandard commercial regime
Commercial structureFramework agreementCompetition typeCompetitive procedureGPA WTO covered{"GPA"}
Recurring procurementYes · Anticipated re-tenderFirst published16 Sept 2026, 14:51 BSTLast source update16 Sept 2026, 14:51 BST
Award evaluation windowSubmission end — 8 Jan 2027, 23:59 GMTEstimated future notice6 May 2026, 23:59 BSTClassification (CPV)Air filters
Delivery area
Official Registry OCIDocds-h6vhtk-050366

How to participate & submission route

Authorized E-Sourcing Portal
Supplier login required
Online submission allowed
Language: EN
Open official portal workspace ↗
Access & Registration note: Free · one account PER buying organisation portal · password resets come "from Salesforce.com" (check spam)
Expression of interest (EOI)
26 Oct 2026, 12:00 GMT
Tender submission deadline
26 Oct 2026, 12:00 GMT
Clarification deadline
26 Oct 2026, 12:00 GMT
Submission channelOfficial e-sourcing portalElectronic submissionAllowedAccepted languagesen
Participation feeFree of charge (Open access)
Detailed Submission Instructions & Authority Contacts
From official release
Timeline
  1. Pipeline notice
    12 May 2026, 15:28 BST
  2. Pipeline notice
    15 Apr 2026, 13:55 BST
  3. Pipeline notice
    8 May 2025, 09:39 BST
  4. Pipeline notice
    15 Apr 2025, 15:23 BST
  5. Procedure published
    16 Sept 2026, 14:51 BST
  6. engagement
    22 May 2026, 23:59 BST · scheduled
    Prior to the publication of the forthcoming HEPA Filters Tender, Sellafield Ltd is reviewing the initially proposed procurement strategy and the market feedback received during earlier market engagement activities. This review is being undertaken to ensure that the procurement approach taken is appropriate for both the supply market and The NDA Group Operating Companies. As part of this process, Sellafield Ltd is seeking to re-engage with the market to validate and further understand supplier views on specific elements of the proposed strategy. In particular, feedback is invited on the following areas: 1. Contracting Strategy Supplier views are requested on the suitability and viability of a dual source contracting model (i.e. the appointment of two suppliers) for the scope of HEPA Filters. 2. Proposed Lotting Structure Supplier feedback is requested on the following indicative lotting structure, should a two supplier model be adopted: Lot 1 – Smaller Basket, comprising: • Mini Pleat HEPA Filters. Unmodified. Type I & II • Large Circular Filters (Internal and External Seal) stainless steel case. • Large Circular Filters (Internal Seal) PU case. • In line canister filters (flanged) • Push through filters (stainless steel case) Lot 2 – Larger Basket, comprising: • Deep pleat HEPA Filters (with and without features) • Mini-pleat filters modified with lifting features & attachments • Large Circular HEPA filters (Internal and external Seal) mild steel casing. • In line Canister HEPA Filters (screwed) • Push through filters (mild steel and PU case) • Specialist HEPA Filters & accessories • Small HEPA Filters Responses to this market engagement will help inform Sellafield Ltd’s ongoing strategy development. Participation in this exercise is voluntary and does not form part of any formal procurement process, nor does it create any commitment to proceed in line with the approaches outlined above. Please respond via an Atamis message against Atamis record Reference C21795 which is used for market engagement only (See the following Atamis portal Link) https://atamis-2464.lightning.force.com. Interested suppliers are to register against project C21795, access the document in the folder titled 'Request for Information (RFI) Version 2.0' and then send your completed response via the Atamis messaging portal. Please also register against Atamis Project C8489 for the upcoming tender using the link provided. If you encounter any issues in doing this, please forward your response directly to [email protected] The deadline for providing your feedback is Friday 22nd May at BST 16.00
  7. Clarification deadline
    26 Oct 2026, 12:00 GMT
  8. Submission deadline
    26 Oct 2026, 12:00 GMT

Commercial outcome and contract awards

Awards (0)No award published
Contracts (0)No contract published
Bid statisticsNo aggregate bid statistics published
Notice history
From official release and amendment events
  1. tender value changed
    16 Sept 2026, 14:51 BST
  2. Status changed to active
    16 Sept 2026, 14:51 BST
  3. Official notice release published
    16 Sept 2026, 14:51 BST
  4. procurement method changed
    16 Sept 2026, 14:51 BST
  5. Published value updated to £6,500,000
    12 May 2026, 15:28 BST
  6. Official notice release published
    12 May 2026, 15:28 BST
  7. procurement method changed
    12 May 2026, 15:28 BST
  8. tender value changed
    15 Apr 2026, 13:55 BST
  9. Official notice release published
    15 Apr 2026, 13:55 BST
  10. procurement method changed
    15 Apr 2026, 13:55 BST
  11. Published value updated to £6,977,251
    8 May 2025, 09:39 BST
  12. Official notice release published
    8 May 2025, 09:39 BST
  13. Official notice release published
    15 Apr 2025, 15:23 BST

Contracting authority & participating public bodies

Sellafield Limited

Contracting authority
Public Body
GB-PPON-PWYP-8439-MZWY
View buyer profile →

Official Documents & Specifications (6)

Official links; attachments are not copied