---
title: "CPT_25_30 - Decarbonisation Project - Mechanical & Electrical Engineering Services (C-4014)"
ocid: "ocds-b5fd17-a5a2c25e-d8f9-46ad-8902-dc2ea850ece4"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-b5fd17-a5a2c25e-d8f9-46ad-8902-dc2ea850ece4"
markdown_url: "https://d3tenders.com/contract/ocds-b5fd17-a5a2c25e-d8f9-46ad-8902-dc2ea850ece4.md"
json_url: "https://d3tenders.com/contract/ocds-b5fd17-a5a2c25e-d8f9-46ad-8902-dc2ea850ece4.json"
source: "Contracts Finder"
current_stage: "Award"
buyer: "NATIONAL AUDIT OFFICE"
published: "2025-11-10"
---

# CPT_25_30 - Decarbonisation Project - Mechanical & Electrical Engineering Services (C-4014)

Buyer: NATIONAL AUDIT OFFICE  
Current stage: Award  
OCID: ocds-b5fd17-a5a2c25e-d8f9-46ad-8902-dc2ea850ece4

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## Summary

The National Audit Office has awarded a contract for Mechanical & Electrical Engineering Services to Ridge and Partners LLP as part of a decarbonisation project for their headquarters located on Buckingham Palace Road, London. This project falls under the industry category of energy-efficiency consultancy services and was managed through an open procedure (below threshold) route, with an initial contract period from 1 October 2025 to 31 March 2026, and a potential extension until 30 September 2026. The procurement process, tagged as "award" and completed on 10 November 2025, had a financial value of £66,000 GBP.

This tender presents significant opportunities for businesses with capabilities in energy-efficiency consultancy, particularly those with expertise in thermographic surveys and net-zero and decarbonisation strategies. Small and medium-sized enterprises (SMEs) as well as voluntary, community and social enterprises (VCSEs) can find ample growth opportunities by competing in such procurements, aligning their offerings with the sustainable development goals of public sector organisations like the NAO. Given the project's focus on decarbonisation, companies with innovative solutions in reducing carbon footprints and improving energy efficiency would be well-suited for this contract and similar future opportunities.

## Notice

The NAO has awarded a contract for a Mechanical and Electrical Engineering Services with expertise in thermographic surveys, net-zero and decarbonisation to decarbonise its headquarters on Buckingham Palace Road, London. This is for a six month contract with the provision to extend for a further 6 months. Initial contract is from 1 October 2025 - 31 March 2026. The final expiry should the contract be extended will be 30 September 2026. The procurement route is Competitive - Non FTS.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Contracts Finder |
| Latest notice | https://www.contractsfinder.service.gov.uk/Notice/399e367f-05de-458f-8e07-5f5b6c22efb1 |
| Notice type | Award Notice |
| Procurement type | Standard |
| Procurement category | Services |
| Procurement method | Open |
| Procurement method details | Open procedure (below threshold) |
| Tender suitability | SME, VCSE |
| Awardee scale | Large |
| All stages | Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 10 Nov 2025 |
| Submission deadline | 1 Jul 2025 |
| Future notice date | Not specified |
| Award date | 9 Aug 2025 |
| Contract period | 30 Sep 2025 - 31 Mar 2026 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £66,000 |
| Lots value | Not specified |
| Awards value | £66,000 |
| Contracts value | Not specified |

## Status

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

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | NATIONAL AUDIT OFFICE |
| Locality | LONDON |
| Post town | South West London |
| Postcode | SW1W 9SP |
| Country | England |
| ITL 1 | TLI London |
| ITL 2 | TLI3 Inner London - West |
| ITL 3 | TLI35 Westminster and City of London |
| Local authority | Westminster |
| Electoral ward | Pimlico North |
| Westminster constituency | Cities of London and Westminster |
| Delivery location | Not specified |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | RIDGE AND PARTNERS |

## CPV Codes

### Divisions

- 71 - Architectural, construction, engineering and inspection services

### Codes

- 71314300 - Energy-efficiency consultancy services

## Release History

- 10 Nov 2025 at 15:48 - Award - Award Notice - https://www.contractsfinder.service.gov.uk/Notice/399e367f-05de-458f-8e07-5f5b6c22efb1

## Documents

- https://www.contractsfinder.service.gov.uk/Notice/399e367f-05de-458f-8e07-5f5b6c22efb1
  10th November 2025 - Awarded contract notice on Contracts Finder

## Notice URLs

- https://www.nao.org.uk

## 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-b5fd17-a5a2c25e-d8f9-46ad-8902-dc2ea850ece4. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-b5fd17-a5a2c25e-d8f9-46ad-8902-dc2ea850ece4.json.