---
title: "Defining Period"
ocid: "ocds-h6vhtk-067509"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-067509"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-067509.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-067509.json"
source: "Find A Tender Service"
current_stage: "Award"
buyer: "UNITED KINGDOM NATIONAL NUCLEAR LABORATORY LIMITED"
published: "2026-03-26"
---

# Defining Period

Buyer: UNITED KINGDOM NATIONAL NUCLEAR LABORATORY LIMITED  
Current stage: Award  
OCID: ocds-h6vhtk-067509

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[Download OCDS JSON](https://d3tenders.com/contract/ocds-h6vhtk-067509.json)

## Summary

UNITED KINGDOM NATIONAL NUCLEAR LABORATORY LIMITED (UKNNL) has initiated a contract awarding process titled "Defining Period," focusing on engineering services within the United Kingdom. This contract is part of an ongoing procurement process under the framework, aimed at bridging the Concept Design and Preliminary Design phases. The procurement method employed is selective, which is non-competitive and involves awarding under a predetermined framework. The procurement stage is now in the Award phase, with the tender having been completed. The key dates include the contract signing on 17th March 2026, with the contract period starting on 26th March 2026 and potentially spanning until 22nd July 2026, if extended due to early warning or compensation events.

Businesses specialising in engineering services, particularly those capable of strategic design collaboration, will find opportunities for growth in this contract with UKNNL. North West Projects Ltd T/a Actemium Design UK has already been awarded the contract, showcasing the potential for large-scale companies to integrate and contribute significantly to the delivery team's objectives. This tender encourages businesses to develop their scope within the Preliminary Design phase of a large programme, providing an avenue for companies with expertise in engineering and design services to expand their portfolio and establish connections with sub-central government authorities. The contract, valued at £195,000, represents a substantial opportunity for firms looking to enhance their influence in the region.

## Notice

The first call-off contract serves as a bridge between the Concept Design and Preliminary Design phases. It will require the appointed Strategic Design Partner to work in collaboration with UKNNL to integrate into the delivery team to develop a scope for the Preliminary Design phase that underpins the objectives of the overall programme.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/027904-2026 |
| 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 | 26 Mar 2026 |
| Submission deadline | Not specified |
| Future notice date | Not specified |
| Award date | 13 Mar 2026 |
| Contract period | 18 Mar 2026 - 22 May 2026 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | Not specified |
| Lots value | Not specified |
| Awards value | £195,000 |
| Contracts value | £195,000 |

## 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 |
| Post town | 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 LTD T/A ACTEMIUM DESIGN |

## CPV Codes

### Divisions

- 71 - Architectural, construction, engineering and inspection services

### Codes

- 71300000 - Engineering services

## Release History

- 26 Mar 2026 at 13:01 - Award - UK7 - Contract Details Notice - https://www.find-tender.service.gov.uk/Notice/027904-2026
- 26 Mar 2026 at 12:45 - Award - UK6 - Contract Award Notice - https://www.find-tender.service.gov.uk/Notice/027893-2026

## Documents

- https://www.find-tender.service.gov.uk/Notice/027904-2026
  26th March 2026 - Contract details notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/027893-2026
  26th March 2026 - Contract award notice on Find a Tender

## Notice URLs

- 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-067509. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-067509.json.