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CM4 - Bathymetry & Topographic Surveys - Bishop Rock and Longships Lighthouses

Trinity House

This public procurement record has 2 releases in its history.

TenderUpdate

26 Aug 2026 at 09:51

UK4 - Tender Notice
Tender

25 Aug 2026 at 15:37

UK4 - Tender Notice
Summary of the contracting process

Trinity House is procuring bathymetric and topographic surveying services around Bishop Rock and Longships lighthouses. The work will provide accurate information about the seabed and landform surrounding these remote rock tower lighthouses, supporting an investigation into whether jack-up vessels and floating assets could be used to mobilise personnel, equipment and tools for future modernisation and maintenance. Trinity House is responsible for operating and maintaining more than 60 lighthouses around England, Wales, the Channel Islands and Gibraltar. This requirement is for professional surveying services delivered in the United Kingdom, specifically at the Bishop Rock and Longships lighthouse locations. It will suit firms with marine, coastal, hydrographic or topographical survey expertise and the equipment needed to work around isolated lighthouse sites.

The procurement has reached tender: Trinity House invited offers through a below-threshold open competition. It covers one lot. Questions could be submitted until 9 September 2026 at 17:00, and tenders were due by 16 September 2026 at 17:00. The contract period is 30 September 2026 to 31 December 2026. The estimated value is £47,000 excluding VAT, or £56,400 including VAT. The award is based on the most advantageous tender, with price identified as the stated criterion. Bids must be submitted non-electronically. Suppliers wishing to view the full specification were instructed to email etender.user@trinityhouse.co.uk. The procurement is below the applicable threshold and is not divided into further lots.

This opportunity suits specialist hydrographic and topographical surveying companies able to produce accurate bathymetric and topographic data in challenging marine environments. Relevant suppliers are likely to have experience surveying around exposed rock structures, lighthouses, coastal sites or other remote locations, and to be capable of planning and carrying out work where access and mobilisation may be difficult. The requirement will appeal to firms with suitable survey vessels, positioning and depth-measurement systems, topographic survey equipment, data-processing capability and personnel experienced in interpreting marine and land survey results. Contractors should be able to combine seabed and terrain information into reliable outputs that can inform engineering and operational decisions about future lighthouse maintenance and access.

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Notice Information

Notice Title

CM4 - Bathymetry & Topographic Surveys - Bishop Rock and Longships Lighthouses

Notice Description

Trinity House (TH) holds the operation and maintenance responsibility for over 60 lighthouses around England, Wales, the Channel Islands and Gibraltar. These critical aids-to-navigation (AtoNs) include several Rock Tower lighthouses that require regular modernisation and ongoing maintenance. Accordingly, Trinity House would like to investigate the feasibility of utilising jack-up and floating assets to avoid repeated journeys to these remote locations by helicopter to mobilise personnel, equipment and tools. To support this investigation, it is important to have accurate bathymetric and topographic surveys of the surrounding area.

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-h6vhtk-06ebc4
Publication Source
Find A Tender Service
Latest Notice
https://www.find-tender.service.gov.uk/Notice/081091-2026
Current Stage
Tender
All Stages
Tender

Procurement Classification

Notice Type
UK4 - Tender Notice
Procurement Type
Standard
Procurement Category
Services
Procurement Method
Open
Procurement Method Details
Below threshold - open competition
Tender Suitability
Not specified
Awardee Scale
Not specified

Common Procurement Vocabulary (CPV)

CPV Divisions

71 - Architectural, construction, engineering and inspection services

CPV Codes

71351810 - Topographical services

Notice Value(s)

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

Notice Dates

Publication Date
26 Aug 2026Today
Submission Deadline
16 Sep 20263 weeks to go
Future Notice Date
Not specified
Award Date
Not specified
Contract Period
30 Sep 2026 - 31 Dec 2026 1-6 months
Recurrence
Not specified

Notice Status

Tender Status
Active
Lots Status
Active
Awards Status
Not Specified
Contracts Status
Not Specified

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

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

View full OCDS Record for this contracting process

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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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