---
title: "Westbrook Weir Modelling and Outline Design"
ocid: "ocds-b5fd17-21f10dcc-277e-4012-91bc-2fa8fb0af6e3"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-b5fd17-21f10dcc-277e-4012-91bc-2fa8fb0af6e3"
markdown_url: "https://d3tenders.com/contract/ocds-b5fd17-21f10dcc-277e-4012-91bc-2fa8fb0af6e3.md"
json_url: "https://d3tenders.com/contract/ocds-b5fd17-21f10dcc-277e-4012-91bc-2fa8fb0af6e3.json"
source: "Contracts Finder"
current_stage: "Award"
buyer: "ENVIRONMENT AGENCY"
published: "2025-10-06"
---

# Westbrook Weir Modelling and Outline Design

Buyer: ENVIRONMENT AGENCY  
Current stage: Award  
OCID: ocds-b5fd17-21f10dcc-277e-4012-91bc-2fa8fb0af6e3

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## Summary

The Environment Agency has completed the procurement process for the "Westbrook Weir Modelling and Outline Design" contract, primarily falling under the category of environmental services. The procurement was conducted as a call-off from a framework agreement using a selective method, ensuring that the right expertise is leveraged. The awarded contract to WSP UK Limited commenced on 6th October 2025 and is set to conclude on 30th March 2026, with a total project value of GBP 81,662.75. The procurement focused on the South East region of the United Kingdom, specifically involving flood risk modelling and weir designs at the River Wey, demonstrating the contract’s regional significance.

This tender presents numerous opportunities for organisations skilled in environmental services, particularly those with experience in infrastructure and waterway management. SMEs could find substantial growth prospects given the procurement's emphasis on selective tendering and framework agreements, which often favour companies with specialized skills and higher efficiency. Businesses capable of providing flood risk management and environmental consulting can leverage such contracts to expand their portfolio and enhance their presence in regional environmental projects.

## Notice

The Environment Agency is seeking to appoint a Contractor to undertake flood risk modelling and outline designs relating to Westbrook Mill weir on the River Wey (SU9666944205) and its proposed removal. Site Background Westbrook mill has been present for approximately 300 years, and numerous weirs and control structures have been in place maintaining a head of water for its operation. The mill and associated factory have been closed for decades and there is negligible heritage value associated with the site. The weir at Westbrook Mill consists of six 1.5m wide sluice gates in steel frames. There is a difference of 1.3m between the upstream and downstream bed levels, and a maintained upstream water level 1.6m above the weir sill of 36.3m AOD. The side walls downstream of the weir are cast concrete and there is a cast concrete central pier which extends 15m downstream under the road bridge giving access to the complex car park. An access walkway is present over the weir, and the weir is manually operated. The cast concrete 'troughs' formed by the walls and the central island also have a cast concrete bed slab set at approximately 36.2m AOD which functions as a second, shallow weir at low water level conditions. Upstream of the weir the channel is confined between steel sheet pile walls with concrete capping beams for approximately 50m. There are three overspill weirs upstream that feed the Hell Ditch (SU9582944564, SU9630344350, SU9655644244), which rejoins the main river approximately 3km downstream. There is also an informal breach which introduces additional flow into the Hell Ditch (roughly SU9649544320). In 2016, the Environment Agency installed a brush-furnished fish pass at the most-upstream overspill weir, allowing the Hell Ditch to function as a fish migration route bypassing Catteshall and Westbrook weirs on the main River Wey.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Contracts Finder |
| Latest notice | https://www.contractsfinder.service.gov.uk/Notice/3b38e84b-a298-417e-88ee-33a5a62ef3b9 |
| 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 | 6 Oct 2025 |
| Submission deadline | 12 Sep 2025 |
| Future notice date | Not specified |
| Award date | 5 Oct 2025 |
| Contract period | 5 Oct 2025 - 30 Mar 2026 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £81,662 |
| Lots value | Not specified |
| Awards value | £81,662 |
| 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 | ENVIRONMENT AGENCY |
| 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 | TLJ South East (England) |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | WSP |

## CPV Codes

### Divisions

- 90 - Sewage, refuse, cleaning and environmental services

### Codes

- 90700000 - Environmental services

## Release History

- 6 Oct 2025 at 13:38 - Award - Award Notice - https://www.contractsfinder.service.gov.uk/Notice/3b38e84b-a298-417e-88ee-33a5a62ef3b9

## Documents

- https://www.contractsfinder.service.gov.uk/Notice/3b38e84b-a298-417e-88ee-33a5a62ef3b9
  6th October 2025 - Awarded contract notice on Contracts Finder

## Provenance

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