---
title: "Nitrogen reduction feasibility study - air quality"
ocid: "ocds-b5fd17-f2860d11-4c60-497f-87e5-52be188ce320"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-b5fd17-f2860d11-4c60-497f-87e5-52be188ce320"
markdown_url: "https://d3tenders.com/contract/ocds-b5fd17-f2860d11-4c60-497f-87e5-52be188ce320.md"
json_url: "https://d3tenders.com/contract/ocds-b5fd17-f2860d11-4c60-497f-87e5-52be188ce320.json"
source: "Contracts Finder"
current_stage: "Award"
buyer: "NATURAL ENGLAND"
published: "2025-12-03"
---

# Nitrogen reduction feasibility study - air quality

Buyer: NATURAL ENGLAND  
Current stage: Award  
OCID: ocds-b5fd17-f2860d11-4c60-497f-87e5-52be188ce320

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## Summary

Natural England has completed the procurement process for a feasibility study on nitrogen reduction aimed at enhancing air quality in Yorkshire and the Humber, United Kingdom. Classified under research consultancy services, this contract follows a selective procurement method via a call-off from a framework agreement. The tender period concluded on 7th November 2025, with the contract set to run from 11th November 2025 to 27th March 2026. The award, valued at £29,757.20, was actively announced on 3rd December 2025.

This tender provides an opportunity for businesses specialising in environmental consultancy and research services to contribute to significant regional environmental improvements. Small and medium-sized enterprises are particularly suited for such opportunities, though the current awardee, RICARDO-AEA LIMITED, is a large supplier, indicating potential for collaborative or subcontracting partnerships. With the emphasis on sustainability and environmental impact, companies with expertise in air quality and emissions reduction may find growth avenues within such projects, helping them expand their influence and service offerings.

## Notice

Nitrogen reduction feasibility study - air quality

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Contracts Finder |
| Latest notice | https://www.contractsfinder.service.gov.uk/Notice/bc9d2d5d-ccf3-4e28-8526-ed9994d3801a |
| Notice type | Award Notice |
| Procurement type | Framework |
| Procurement category | Services |
| Procurement method | Selective |
| Procurement method details | Call-off from a framework agreement |
| Tender suitability | SME |
| Awardee scale | Large |
| All stages | Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 3 Dec 2025 |
| Submission deadline | 7 Nov 2025 |
| Future notice date | Not specified |
| Award date | 7 Nov 2025 |
| Contract period | 11 Nov 2025 - 27 Mar 2026 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £29,757 |
| Lots value | Not specified |
| Awards value | £29,757 |
| 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 | NATURAL ENGLAND |
| Locality | YORK |
| Post town | York |
| Postcode | YO1 7PX |
| Country | England |
| ITL 1 | TLE Yorkshire and The Humber |
| ITL 2 | TLE2 North Yorkshire |
| ITL 3 | TLE21 York |
| Local authority | York |
| Electoral ward | Guildhall |
| Westminster constituency | York Central |
| Delivery location | TLE Yorkshire and The Humber |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | RICARDO-AEA |

## CPV Codes

### Divisions

- 73 - Research and development services and related consultancy services

### Codes

- 73210000 - Research consultancy services

## Release History

- 3 Dec 2025 at 09:19 - Award - Award Notice - https://www.contractsfinder.service.gov.uk/Notice/bc9d2d5d-ccf3-4e28-8526-ed9994d3801a

## Documents

- https://www.contractsfinder.service.gov.uk/Notice/bc9d2d5d-ccf3-4e28-8526-ed9994d3801a
  3rd December 2025 - Awarded contract notice on Contracts Finder
- https://www.contractsfinder.service.gov.uk/Notice/Attachment/1b2bd6e0-a979-4c4c-8be1-4152ac5107c6
- https://www.contractsfinder.service.gov.uk/Notice/SupplierAttachment/c232451e-b15c-479d-bd8b-2b38fe02aaa7

## 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-f2860d11-4c60-497f-87e5-52be188ce320. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-b5fd17-f2860d11-4c60-497f-87e5-52be188ce320.json.