Invitation to Tender: River Habitat restoration & barrier removal works to 1km of the Hughenden stream at Hughenden Manor
- Closing date: 31 October 2025
Description
The Hughenden stream has been heavily modified, including through the construction of six weirs and associated pools. The channel is overwide, shows signs of dredging and has steep banks, and consequently lacks much of the character associated with a chalk stream. With a joint focus on habitat improvement and access, the objectives of the project are:
- Improve the character of nearly 1km of winterbourne chalk stream, including the complexity of the channel morphology and wider habitat mosaic, through the full hydrograph.
- Remove the impoundments caused by the six weirs, thereby reinstating natural sediment processes and restoring longitudinal connectivity including for fish and macroinvertebrates.
- Create an environment that supports natural processes and allows nature to thrive as well as providing opportunities for the many visitors to Hughenden Manor to observe, interact and connect with the stream, the landscape and the ecosystems it supports.
- Reduce the maintenance burden on the National Trust, the landowner, in maintaining the river channel and corridor in a condition that supports both the natural environment and human interaction with it.
It is important that the appropriate consents are secured before the commencement of any practical works.
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How to apply
Your completed response should be submitted by the due date and time required:
Date: Friday 31st October 2025
Time: 12:00 noon, GMT
Responses should be submitted in an electronic format via email to aporter@chilterns.org.uk. No other method will be accepted.
In order to overcome file size difficulties, we request that tender submissions are completed in PDF format. Any attachments provided beyond those requested will not be reviewed. Delivery of response as specified is the sole responsibility of the submitting company. Late responses will not be accepted. If problems occur during the submission stage, please contact Adrian Porter in advance of the deadline (aporter@chilterns.org.uk).
The Chilterns Conservation Board takes no responsibility for identifying any clerical errors or misunderstandings in any tenders submitted. Tenderers must therefore ensure that the content of any Tender submitted is complete and accurate.