---
title: "Preliminary Design Call-off Contract"
ocid: "ocds-h6vhtk-06e890"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-06e890"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-06e890.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-06e890.json"
source: "Find A Tender Service"
current_stage: "Award"
buyer: "UNITED KINGDOM NATIONAL NUCLEAR LABORATORY LIMITED"
published: "2026-08-20"
---

# Preliminary Design Call-off Contract

Buyer: UNITED KINGDOM NATIONAL NUCLEAR LABORATORY LIMITED  
Current stage: Award  
OCID: ocds-h6vhtk-06e890

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## Summary

United Kingdom National Nuclear Laboratory Limited procured preliminary design services for a deconversion research and development rig associated with high-assay low-enriched uranium (HALEU) deconversion. The requirement was the second call-off under the Strategic Design Partner Framework for HALEU Deconversion. The work falls within engineering services and is to be delivered in the United Kingdom. The buyer is a public authority based in Warrington. The procurement comprised one lot and covered the supplier’s preliminary design work for the deconversion R&D rig, rather than construction or full implementation of the facility. This is a specialist engineering design requirement connected with nuclear research and development, suited to organisations able to work within the buyer’s strategic design partner arrangements.

The procurement is complete and the contract has been awarded. It used a selective procedure as an award under an existing framework, with no reopening of competition for this call-off. North West Projects Limited, trading as Actemium Design UK, was awarded the contract on 1 July 2026. The awarded and contracted value is £887,763.96 excluding VAT, or £1,065,316.76 including VAT. The contract was signed on 9 July 2026. The contract period runs from 13 July 2026 to 24 February 2027, with a possible extension to 31 March 2027 under the NEC4 Professional Services Contract terms. The award period is recorded as starting on 20 August 2026 and ending on 24 February 2027.

This award indicates demand for specialist preliminary engineering design within the National Nuclear Laboratory’s HALEU deconversion programme. Suppliers best placed for comparable future requirements would need demonstrable capability in engineering design for research and development equipment, particularly where work relates to nuclear processes, uranium deconversion or other technically regulated environments. Credibility would also depend on the ability to operate as a strategic design partner and to produce design work suitable for progression into later technical or delivery stages. Experience of structured professional services contracts, including NEC4 PSC arrangements, would be relevant. The scale of the award suggests a substantial, focused design commission suited to an established engineering organisation or a consortium with the necessary nuclear, process and design assurance expertise.

## Notice

This contract is the second call-off under the Strategic Design Partner Framework for HALEU Deconversion. The contracted supplier is to undertake Preliminary Design for the Deconversion R&D Rig.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/079443-2026 |
| Notice type | UK7 - Contract Details Notice |
| Procurement type | Standard |
| Procurement category | Services |
| Procurement method | Selective |
| Procurement method details | Award under framework |
| Tender suitability | Not specified |
| Awardee scale | Large |
| All stages | Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 20 Aug 2026 |
| Submission deadline | Not specified |
| Future notice date | Not specified |
| Award date | 1 Jul 2026 |
| Contract period | 13 Jul 2026 - 24 Feb 2027 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | Not specified |
| Lots value | Not specified |
| Awards value | £887,763 |
| Contracts value | £887,763 |

## Status

| Field | Value |
| --- | --- |
| Tender status | Complete |
| Lots status | Complete |
| Awards status | Active |
| Contracts status | Active |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | UNITED KINGDOM NATIONAL NUCLEAR LABORATORY LIMITED |
| Locality | WARRINGTON |
| Postcode area | Warrington |
| Postcode | WA3 6AE |
| Country | England |
| ITL 1 | TLD North West (England) |
| ITL 2 | TLD6 Cheshire |
| ITL 3 | TLD61 Warrington |
| Local authority | Warrington |
| Electoral ward | Birchwood |
| Westminster constituency | Warrington North |
| Delivery location | Not specified |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | NORTH WEST PROJECTS LIMITED (trading as ACTEMIUM DESIGN UK) |

## CPV Codes

### Divisions

- 71 - Architectural, construction, engineering and inspection services

### Codes

- 71300000 - Engineering services

## Release History

- 20 Aug 2026 at 13:09 - Award - UK7 - Contract Details Notice - https://www.find-tender.service.gov.uk/Notice/079443-2026
- 20 Aug 2026 at 13:04 - Award - UK6 - Contract Award Notice - https://www.find-tender.service.gov.uk/Notice/079439-2026

## Documents

- https://www.find-tender.service.gov.uk/Notice/079443-2026
  20th August 2026 - Contract details notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/079439-2026
  20th August 2026 - Contract award notice on Find a Tender

## Notice URLs

- http://www.actemium.co.uk
- http://www.uknnl.com
- https://www.find-tender.service.gov.uk/api/1.0/ocdsReleasePackages/ocds-h6vhtk-05d301
- https://www.legislation.gov.uk/ukpga/2023/54/contents

## Provenance

This Markdown file is an alternate public rendering of the D3 Tenders contract record. The canonical page is https://d3tenders.com/contract/?ocid=ocds-h6vhtk-06e890. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-06e890.json.