---
title: "D1 South Mezzanine Extension"
ocid: "ocds-h6vhtk-05cc5f"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-05cc5f"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-05cc5f.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-05cc5f.json"
source: "Find A Tender Service"
current_stage: "Tender"
buyer: "UK ATOMIC ENERGY AUTHORITY"
published: "2025-10-14"
---

# D1 South Mezzanine Extension

Buyer: UK ATOMIC ENERGY AUTHORITY  
Current stage: Tender  
OCID: ocds-h6vhtk-05cc5f

[View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-h6vhtk-05cc5f)  
[Download OCDS JSON](https://d3tenders.com/contract/ocds-h6vhtk-05cc5f.json)

## Summary

The UK Atomic Energy Authority is inviting tenders for the design and installation of a single-storey mezzanine at the Culham Science Centre in Oxfordshire. This extension is intended to enhance storage space and connect existing mezzanines. The procurement process is currently in the tender stage, with submissions due by 12:00 on 10th November 2025. This project falls under the construction Works category, with a total budget of £300,000, and will adhere to an open competition method. The procurement method is "Below threshold - open competition," and the relevant industry category is construction work (CPV: 45000000). The tender process provides for electronic submissions, and interested parties can make inquiries until 30th October 2025.

The opportunity presented by the D1 South Mezzanine Extension project offers significant potential for business growth, particularly for SMEs and VCSEs (Voluntary, Community and Social Enterprises) located within or capable of serving the Oxfordshire region. This contract aims to evaluate submissions based equally on commercial and technical criteria, thus allowing innovative construction firms to showcase their capabilities in both quality and cost efficiency. Enterprises with expertise in construction, particularly those experienced with mezzanine installations and building control, will find this procurement ideally suited to their strengths. Furthermore, the project's framework encourages competitive pricing alongside technical excellence, creating an equitable chance to secure this contract.

## Notice

A single storey mezzanine to be designed and installed to provide additional storage and to link up two existing mezzanines to create access between the two. There is currently a staircase down from one of the existing mezzanine's that we would like to remove subject to building control as this is in the space between the two. The mezzanine is to have finishes matching the current one. Loading requirements to be 750kgm2 or higher.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/065223-2025 |
| Notice type | UK4 - Tender Notice |
| Procurement type | Standard |
| Procurement category | Works |
| Procurement method | Open |
| Procurement method details | Below threshold - open competition |
| Tender suitability | SME, VCSE |
| Awardee scale | Not specified |
| All stages | Tender |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 14 Oct 2025 |
| Submission deadline | 10 Nov 2025 |
| Future notice date | Not specified |
| Award date | Not specified |
| Contract period | 28 Nov 2025 - 31 Mar 2026 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £250,000 |
| Lots value | £250,000 |
| Awards value | Not specified |
| Contracts value | Not specified |

## Status

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

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | UK ATOMIC ENERGY AUTHORITY |
| Locality | OXFORDSHIRE |
| Post town | Oxford |
| Postcode | OX14 3DB |
| Country | England |
| ITL 1 | TLJ South East (England) |
| ITL 2 | TLJ1 Berkshire, Buckinghamshire and Oxfordshire |
| ITL 3 | TLJ14 Oxfordshire CC |
| Local authority | South Oxfordshire |
| Electoral ward | Sandford & the Wittenhams |
| Westminster constituency | Didcot and Wantage |
| Delivery location | TLJ14 Oxfordshire CC |

## CPV Codes

### Divisions

- 45 - Construction work

### Codes

- 45000000 - Construction work

## Release History

- 14 Oct 2025 at 13:30 - Tender - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/065223-2025

## Documents

- https://www.find-tender.service.gov.uk/Notice/065223-2025
  14th October 2025 - Tender notice on Find a Tender

## Notice URLs

- https://uk.eu-supply.com/app/rfq/rwlentrance_s.asp?PID=98986&B=
- https://www.gov.uk/government/organisations/uk-atomic-energy-authority
- 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-05cc5f. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-05cc5f.json.