---
title: "Investigation of regulated tidal exchange and water level control structures for management of saline lagoons at North Killingholme Haven Pits Site of Special Scientific Interest, North East Lincolnshire"
ocid: "ocds-h6vhtk-059247"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-059247"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-059247.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-059247.json"
source: "Find A Tender Service"
current_stage: "Award"
buyer: "NATURAL ENGLAND"
published: "2025-10-14"
---

# Investigation of regulated tidal exchange and water level control structures for management of saline lagoons at North Killingholme Haven Pits Site of Special Scientific Interest, North East Lincolnshire

Buyer: NATURAL ENGLAND  
Current stage: Award  
OCID: ocds-h6vhtk-059247

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## Summary

Natural England, a central government public authority in the UK, has completed the procurement process for a project titled "Investigation of regulated tidal exchange and water level control structures for management of saline lagoons at North Killingholme Haven Pits Site of Special Scientific Interest, North East Lincolnshire". This project, situated near Immingham, North East Lincolnshire, focuses on environmental services in the Humber Estuary region. The procurement method was an open competition, aimed at providing concept designs and cost estimates for managing water levels. The contract was active from 13th October 2025 to 1st March 2026, with JBA Consulting Limited selected as the supplier. Key deadlines included the tender submission due by 24th September 2025.

This tender presents significant opportunities for businesses in the environmental services sector, particularly those specialising in water management and ecological assessments. With a project value of £11,590, it serves as a substantial engagement for large consultancy firms familiar with managing similar scale and scope projects. Enterprises that can offer innovative solutions for tidal exchange and water control structures will find this contract particularly beneficial for their portfolio, thereby facilitating business growth through successful delivery and enhancement of their track record with central government contracts.

## Notice

North Killingholme Haven Pits SSSI is near Immingham, North East Lincolnshire, on the south bank of the Humber Estuary (central grid reference TA1662919816). The privately owned,16ha, site comprises former clay pits which have developed into saline lagoons. It is within the Humber Estuary Special Protection Area/Ramsar site and is of international importance for non-breeding waterfowl. The site is connected to the Humber Estuary by a manually operated sluice in the flood bank, which allows for the regulated exchange of tidal water. The sluice is over 50 years old and is not fully functioning due to siltation, and health and safety concerns regarding its operation. The aims of the investigation are to assess the existing sluice, and appraise the options for management of water levels to achieve the site objectives. Outputs include concept designs and estimated costs. A site visit is required to understand the site and the constraints, and assess the existing sluice. (Note this opportunity was first published in July 2025 but a contract was not awarded. This is a re-publishing with a revised specification and increased estimated maximum value)

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/065105-2025 |
| Notice type | UK7 - Contract Details Notice |
| Procurement type | Standard |
| Procurement category | Services |
| Procurement method | Open |
| Procurement method details | Below threshold - open competition |
| Tender suitability | SME |
| Awardee scale | Large |
| All stages | Tender, Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 14 Oct 2025 |
| Submission deadline | 24 Sep 2025 |
| Future notice date | Not specified |
| Award date | 12 Oct 2025 |
| Contract period | 12 Oct 2025 - 1 Mar 2026 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £12,500 |
| Lots value | £12,500 |
| Awards value | Not specified |
| Contracts value | £11,590 |

## Status

| Field | Value |
| --- | --- |
| Tender status | Complete |
| Lots status | Complete |
| Awards status | Active |
| Contracts status | Active |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | NATURAL ENGLAND |
| Locality | LONDON |
| Post town | South West London |
| Postcode | SW1P 4DF |
| 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 | St James's |
| Westminster constituency | Cities of London and Westminster |
| Delivery location | TLE Yorkshire and The Humber |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | JBA CONSULTING |

## CPV Codes

### Divisions

- 90 - Sewage, refuse, cleaning and environmental services

### Codes

- 90700000 - Environmental services

## Release History

- 14 Oct 2025 at 10:39 - Award - UK7 - Contract Details Notice - https://www.find-tender.service.gov.uk/Notice/065105-2025
- 2 Sep 2025 at 13:22 - Tender - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/053193-2025

## Documents

- https://www.find-tender.service.gov.uk/Notice/065105-2025
  14th October 2025 - Contract details notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/053193-2025
  2nd September 2025 - Tender notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/Attachment/A-4740
  RFQ
- https://www.find-tender.service.gov.uk/Notice/Attachment/A-4741
  Order Form
- https://www.find-tender.service.gov.uk/Notice/Attachment/A-4742
  Commercial Response

## Notice URLs

- https://www.legislation.gov.uk/ukpga/2023/54/contents

## Provenance

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