---
title: "Ecological Surveys Advisor ITT"
ocid: "ocds-h6vhtk-058830"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-058830"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-058830.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-058830.json"
source: "Find A Tender Service"
current_stage: "Award"
buyer: "THE CROWN ESTATE"
published: "2025-10-30"
---

# Ecological Surveys Advisor ITT

Buyer: THE CROWN ESTATE  
Current stage: Award  
OCID: ocds-h6vhtk-058830

[View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-h6vhtk-058830)  
[Download OCDS JSON](https://d3tenders.com/contract/ocds-h6vhtk-058830.json)

## Summary

The Crown Estate, a central government public authority located in London, has recently concluded the procurement process for its "Ecological Surveys Advisor ITT." This initiative focuses on supporting ecological surveys required for the next offshore wind leasing round. The open procedure tender, completed in October 2025, attracted participation from multiple bidders. Tetra Tech Limited, a large enterprise based in Leeds, has been awarded the contract to provide services, spanning from survey design to marine consenting advice. The contract is set to run from 29th October 2025 for an initial period of 36 months, with a possible extension for an additional year, resulting in a contract value of £3,000,000 by gross amount. This procurement falls under the service industry category and involves environmental engineering consultancy and marine survey services.

This contract presents lucrative opportunities for businesses specializing in environmental engineering and marine surveys. By securing a framework agreement, The Crown Estate aims to streamline future ecological service requirements through structured call-offs, thus reducing the need for individual tenders. This approach offers stability and growth for Tetra Tech Limited and similarly positioned large enterprises in this sector. Additionally, the focus on offshore wind projects could appeal to companies with expertise in renewable energy-related environmental assessments, enabling them to contribute to and benefit from the burgeoning offshore wind industry in the UK. The contract's framework nature is ideal for businesses seeking long-term, strategic partnerships with central government entities.

## Notice

The Crown Estate (TCE) is seeking to establish a contract with a single supplier to provide specific services to support the delivery of Ecological surveys for the next offshore wind leasing round. The purpose of this tender is to provide TCE with an efficient way to call off future requirements for Ecological services. This will avoid individual tenders being issued as required and Tenderers having to invest time in bidding for multiple tenders. When the contract is let to a single supplier, Individual Work Orders will be issued using structured call offs, with each detailing the specific scope, activities, deliverables and timelines. Scope Of Services Under The Contract 1.1 Evidence & Engagement Plan 1.2 Survey Design And Implementation 1.3 Contractor Procurement 1.4 Contractor Management 1.5 Data Management, Interpretation And Reporting 1.6 Marine Consenting Advice 1.7 Stakeholder Engagement 1.8 Ad Hoc Tasks

### Lot Information

Lot 1

Renewal: This a 36 month single supplier framework with the option to extend for a further 12 months at the sole discretion of The Crown Estate.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/069851-2025 |
| Notice type | UK7 - Contract Details Notice |
| Procurement type | Framework |
| Procurement category | Services |
| Procurement method | Open |
| Procurement method details | Open procedure |
| Tender suitability | SME |
| Awardee scale | Large |
| All stages | Tender, Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 30 Oct 2025 |
| Submission deadline | 22 Sep 2025 |
| Future notice date | Not specified |
| Award date | 16 Oct 2025 |
| Contract period | 29 Oct 2025 - 28 Oct 2028 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £2,500,000 |
| Lots value | £2,500,000 |
| Awards value | £2,500,000 |
| Contracts value | £2,500,000 |

## Status

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

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | THE CROWN ESTATE |
| Additional buyers | THE CROWN ESTATE COMMISSIONERS |
| Locality | LONDON |
| Post town | South West London |
| Postcode | SW1Y 4AH |
| 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 | Not specified |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | TETRA TECH |

## CPV Codes

### Divisions

- 71 - Architectural, construction, engineering and inspection services

### Codes

- 71310000 - Consultative engineering and construction services
- 71313000 - Environmental engineering consultancy services
- 71354500 - Marine survey services

## Release History

- 30 Oct 2025 at 16:10 - Award - UK7 - Contract Details Notice - https://www.find-tender.service.gov.uk/Notice/069851-2025
- 17 Oct 2025 at 14:02 - Award - UK6 - Contract Award Notice - https://www.find-tender.service.gov.uk/Notice/066396-2025
- 14 Aug 2025 at 14:50 - Tender - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/048863-2025

## Documents

- https://www.find-tender.service.gov.uk/Notice/069851-2025
  30th October 2025 - Contract details notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/066396-2025
  17th October 2025 - Contract award notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/048863-2025
  14th August 2025 - Tender notice on Find a Tender

## Notice URLs

- http://www.tetratecheurope.com
- http://www.thecrownestate.co.uk
- https://secure.sourcedogg.com/profile/676e86f0-50b5-4563-b7b6-529dcfeb28b7/requests/70985
- https://secure.sourcedogg.com/profile/676e86f0-50b5-4563-b7b6-529dcfeb28b7/requests/70985PleasefollowtheLinkabovetotheRequestonSourceDogginordertoapply
- https://www.legislation.gov.uk/ukpga/2023/54/contents

## 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-h6vhtk-058830. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-058830.json.