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
The procurement contact named on the official notice.
To apply for this opportunity you must submit your quotation meeting the requirements detailed in the Request for Quotation (RFQ) attached. Your response must be sent to morwenna.christian@naturalengland.org.uk by 12 midday on 24 September 2025. If you have any clarification questions linked to this opportunity or the procurement process please submit these via email to morwenna.christian@naturalengland.org.uk. Please note that, unless commercially sensitive, both the question and the response will be circulated to all tenderers.
The submission route named on the official notice.
This sits below the typical range for Environment & Waste contracts — a smaller, more accessible award. Based on 11,894 valued Environment & Waste tenders in our corpus.
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)
What the supplier must deliver
A site visit is required to understand
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.
Derived from the notice text — always confirm against the original documents.
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- OCID
- ocds-h6vhtk-059247
- Stage
- tender · Open
- Source
- Find a Tender
- Buyer ref
- 053193-2025
Contains public sector information licensed under the Open Government Licence v3.0. Source data © Crown copyright.
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