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CM4 - Bathymetry & Topographic Surveys Bishop Rock and Longships Lighthouses

Trinity House

This public procurement record has 1 release in its history.

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09 Oct 2026 at 16:58

UK7 - Contract Details Notice
Summary of the contracting process

Trinity House commissioned bathymetric and topographic surveys at Bishop Rock and Longships lighthouses. The work involves surveying the seabed and the land around both lighthouse sites, providing information about their terrain and depths. This is a surveying service for two specified lighthouse locations, rather than a general surveying requirement across Trinity House’s estate. The buyer is Trinity House, a central government public authority based in London. The survey locations are Bishop Rock and Longships lighthouses.

The procurement is complete and the contract has been awarded to Castle Surveys Limited. Trinity House used a below-threshold limited competition. The procurement was arranged as one lot, covering surveys at both lighthouses. The contract was signed on 9 October 2026 and runs from 10 October to 30 November 2026. Its value is £47,000 excluding VAT (£56,400 including VAT). The award is recorded as active, and the contract is active. The published procurement information does not set out an evaluation method or detailed eligibility requirements.

This award shows demand for specialist bathymetric and topographic survey work at Trinity House’s lighthouse sites. A credible competitor for a similar requirement would need the technical capability and equipment to collect both seabed-depth and land-terrain survey data in and around lighthouse locations, and to deliver usable survey results within a short, defined project period. Experience working at isolated or coastal sites would be commercially relevant to this specific type of work, although no particular accreditation or named technical standard is stated. The selected supplier is an SME, demonstrating that a business of this scale has delivered the requirement. The buyer used limited competition below the procurement threshold, so suppliers should be equipped to respond to an invited competitive process.

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Notice Information

Notice Title

CM4 - Bathymetry & Topographic Surveys Bishop Rock and Longships Lighthouses

Notice Description

Bathymetry & Topographic Surveys for two of our Lighthouses - Bishop Rock and Longships Lighthouses

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-h6vhtk-078527
Publication Source
Find A Tender Service
Latest Notice
https://www.find-tender.service.gov.uk/Notice/095836-2026
Current Stage
Award
All Stages
Award

Procurement Classification

Notice Type
UK7 - Contract Details Notice
Procurement Type
Standard
Procurement Category
Services
Procurement Method
Limited
Procurement Method Details
Below threshold - limited competition
Tender Suitability
Not specified
Awardee Scale
SME

Common Procurement Vocabulary (CPV)

CPV Divisions

71 - Architectural, construction, engineering and inspection services

CPV Codes

71351810 - Topographical services

Notice Value(s)

Tender Value
Not specified
Lots Value
Not specified
Awards Value
Not specified
Contracts Value
£47,000 Under £100K

Notice Dates

Publication Date
9 Oct 20262 weeks ago
Submission Deadline
Not specified
Future Notice Date
Not specified
Award Date
Not specified
Contract Period
10 Oct 2026 - 30 Nov 2026 1-6 months
Recurrence
Not specified

Notice Status

Tender Status
Complete
Lots Status
Complete
Awards Status
Active
Contracts Status
Active

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
Trinity House
Contact Name
Available with D3 Tenders Premium →
Contact Email
Available with D3 Tenders Premium →
Contact Phone
Available with D3 Tenders Premium →

Buyer Location

Locality
LONDON
Postcode
EC3N 4DH
Postcode Area
Central London
Country
England
Major Region (ITL 1)
TLI London
Basic Region (ITL 2)
TLI3 Inner London - West
Small Region (ITL 3)
TLI35 Westminster and City of London
Delivery Location
Not specified
Local Authority
City of London
Electoral Ward
Tower
Westminster Constituency
Cities of London and Westminster

Supplier Information

Number of Suppliers
1
Supplier Name

CASTLE SURVEYS LIMITED

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

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The Open Contracting Data Standard (OCDS) is a framework designed to increase transparency and access to public procurement data in the public sector. It is widely used by governments and organisations worldwide to report on procurement processes and contracts.

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