---
title: "Porton Main Plenum Replacement"
ocid: "ocds-h6vhtk-05e31a"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-05e31a"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-05e31a.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-05e31a.json"
source: "Find A Tender Service"
current_stage: "Planning"
buyer: "SECRETARY OF STATE FOR HEALTH AND SOCIAL CARE ACTING AS PART OF THE CROWN THROUGH UK HEALTH SECURITY AGENCY"
published: "2025-11-18"
---

# Porton Main Plenum Replacement

Buyer: SECRETARY OF STATE FOR HEALTH AND SOCIAL CARE ACTING AS PART OF THE CROWN THROUGH UK HEALTH SECURITY AGENCY  
Current stage: Planning  
OCID: ocds-h6vhtk-05e31a

[View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-h6vhtk-05e31a)  
[Download OCDS JSON](https://d3tenders.com/contract/ocds-h6vhtk-05e31a.json)

## Summary

The Secretary of State for Health and Social Care, acting through the UK Health Security Agency, is planning a procurement process for a complex refurbishment project at the UKHSA Porton site. The initiative, titled "Porton Main Plenum Replacement," falls under the construction industry category and is located in the UK region (UKK). It is currently in the planning stage, with key preliminary market engagement scheduled to conclude by 24th November 2025. This stage aims to identify capable contractors for refurbishing high-containment laboratories and related facilities, involving significant ductwork replacement, asbestos removal, and new installations. The project is valued at £30 million, with gross estimates reaching £36 million, and anticipates a collaborative delivery model starting on 13th July 2026 and concluding on 12th July 2029.

This tender presents significant opportunities for growth, particularly for businesses experienced in construction work, HVAC packages, and asbestos removal services. The engagement is particularly suited to SMEs skilled in managing complex environments requiring strict biosafety and health compliance. Companies capable of innovating and coordinating around live services to maintain operational integrity could find this project appealing. Participation in the preliminary engagement and completion of the associated questionnaire by the due date could position suitable firms well for the upcoming tendering process. This initiative offers a substantial entry point for those looking to expand their portfolio within the central government public authority sector.

## Notice

This contract will be for works to replace approximately 4km of supply and extract ductwork, install new air handling units and extract fans, removal and disposal of asbestos contaminated ductwork and other associated works.

### Planning Information

The UK Health Security Agency (UKHSA) are looking to conduct preliminary market engagement in advance of a future procurement exercise to appoint a contractor for a complex refurbishment project with the UKHSA Porton site, which houses high-containment laboratories, offices and corridors.
The scope of this project includes:
- Replacement of approximately 4km of supply and extract ductwork.
- Installation of new Air Handling Units (AHUs) and extract fans.
- Removal and disposal of asbestos contaminated ductwork (notifiable asbestos work).
- Associated works including the replacement of doors, windows, fire access doors, corridor panelling, riser firestopping, and other related items.
The key challenges for this requirement are:
- Working within high-containment laboratory environments with strict biosafety protocols.
- Coordination around live services to maintain operational continuity.
- Compliance with asbestos regulations and robust health and safety standards.
We anticipate a collaborative delivery model and welcome innovative solutions to manage complexity, phasing and risk.
If this requirement is within your companies capabilities and is of interest, please complete the questionnaire that can be found at the below link:
https://forms.office.com/e/vTZU59MQDN
Questionnaires should be complete by 12 noon on Monday 24th November 2025.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/074676-2025 |
| Notice type | UK2 - Preliminary Market Engagement Notice |
| Procurement type | Standard |
| Procurement category | Works |
| Procurement method | Not Specified |
| Procurement method details | Not specified |
| Tender suitability | SME |
| Awardee scale | Not specified |
| All stages | Planning |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 18 Nov 2025 |
| Submission deadline | Not specified |
| Future notice date | 2 Feb 2026 |
| Award date | Not specified |
| Contract period | 12 Jul 2026 - 12 Jul 2029 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £30,000,000 |
| Lots value | Not specified |
| Awards value | Not specified |
| Contracts value | Not specified |

## Status

| Field | Value |
| --- | --- |
| Tender status | Planning |
| Lots status | Planning |
| Awards status | Not specified |
| Contracts status | Not specified |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | SECRETARY OF STATE FOR HEALTH AND SOCIAL CARE ACTING AS PART OF THE CROWN THROUGH UK HEALTH SECURITY AGENCY |
| Locality | LONDON |
| Post town | East London |
| Postcode | E14 4PU |
| Country | England |
| ITL 1 | TLI London |
| ITL 2 | TLI4 Inner London - East |
| ITL 3 | TLI42 Tower Hamlets |
| Local authority | Tower Hamlets |
| Electoral ward | Canary Wharf |
| Westminster constituency | Poplar and Limehouse |
| Delivery location | TLK South West (England) |

## CPV Codes

### Divisions

- 42 - Industrial machinery
- 45 - Construction work
- 50 - Repair and maintenance services
- 90 - Sewage, refuse, cleaning and environmental services

### Codes

- 42512300 - HVAC packages
- 45000000 - Construction work
- 45210000 - Building construction work
- 45262660 - Asbestos-removal work
- 50710000 - Repair and maintenance services of electrical and mechanical building installations
- 90650000 - Asbestos removal services

## Release History

- 18 Nov 2025 at 11:08 - PlanningUpdate - UK2 - Preliminary Market Engagement Notice - https://www.find-tender.service.gov.uk/Notice/074676-2025
- 18 Nov 2025 at 11:06 - Planning - UK2 - Preliminary Market Engagement Notice - https://www.find-tender.service.gov.uk/Notice/074673-2025

## Documents

- https://www.find-tender.service.gov.uk/Notice/074676-2025
  18th November 2025 - Preliminary market engagement notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/074673-2025
  18th November 2025 - Preliminary market engagement notice on Find a Tender

## Notice URLs

- https://forms.office.com/e/vTZU59MQDN
- https://www.gov.uk/government/organisations/uk-health-security-agency
- 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-05e31a. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-05e31a.json.