Company lists · Data refreshed September 2026
Top 25 Coastal survey firms based in the United Kingdom
RevenueBase identified 175 coastal survey firms headquartered in the United Kingdom as of September 2026 and tracks 3,935 professional contacts across them, including 1,375 with verified work emails. London is the largest hub.
This list covers coastal survey firms headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest coastal survey firms based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 545 contacts → | ||||
Partial evidence “Gardline is a best-in-class provider of geophysical, geotechnical and environmental marine surveys.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 502 contacts → | ||||
Indirect evidence “The UK Hydrographic Office (UKHO) is a world-leading centre for hydrography, delivering data and expertise for safe, secure and thriving oceans.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 490 contacts → | ||||
Indirect evidence “UTEC, Acteon’s Geo-services business line, harnesses data to optimise designs, save time and maximise your project’s economic value by providing a holistic understanding of the…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 387 contacts → | ||||
Indirect evidence “Briggs Marine is a leading provider of marine and environmental services, specialising in port and marine operations, subsea and environmental support and vessel charter.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 241 contacts → | ||||
Indirect evidence “Sulmara is a global seabed intelligence company, capturing and interpreting high-quality subsea data to enable smarter offshore decisions.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 74 contacts → | ||||
Partial evidence “EGS International Ltd (EGSi) is part of a leading international group of companies specialising in marine surveys.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 69 contacts → | ||||
Indirect evidence “ABPmer is a leading UK marine consultancy, creating sustainable solutions for clients in the marine environment.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 49 contacts → | ||||
Partial evidence “Benthic Solutions Limited (BSL) is an independent marine environmental consultancy and survey company offering a broad range of capabilities in survey, analytical, interpretative…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 44 contacts → | ||||
Indirect evidence “Marine Contractors specialising in: Marine Civil Engineering and Construction.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 42 contacts → | ||||
Partial evidence “Gold Crest Chartered Surveyors is a National Surveying Company.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 41 contacts → | ||||
Indirect evidence “Coda Octopus is a global leader and specialist in underwater technologies including being the patent holder for the real-time 3D sonar, the Echoscope®.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 41 contacts → | ||||
Partial evidence “Spectrum specialises in the provision of combined marine survey and crew transfer vessel services to the offshore construction industry.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 35 contacts → | ||||
Indirect evidence “We are experts in metocean, floating LiDAR seabed measurement, analyses and critical advice.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 32 contacts → | ||||
Partial evidence “McAuslands began as McAusland Turner, a UK marine surveying and consulting firm, back in The company is the oldest Marine Surveying and Consulting firm in continuous operation in…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 30 contacts → | ||||
Indirect evidence “We specialise in the hire and operation of marine seismic and geophysical systems, marine geotechnical systems, and compressors.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 28 contacts → | ||||
Indirect evidence “For over 25 years, Triton Software (Formerly Pisys Marine) is one of a leading company in marine domain providing the software, services and data solutions to its customers in the…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 27 contacts → | ||||
Strong evidence “Aspect Land & Hydrographic Surveys Ltd are one of the UK’s leading independent coastal survey companies, with extensive experience and a proven track record in providing…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 26 contacts → | ||||
Partial evidence “Operating globally from a hub in Orkney, off the north coast of Scotland, Aquatera provides environmental expertise and operational support for offshore, coastal and land-based…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 26 contacts → | ||||
Indirect evidence “Metatek is a global geophysical services company providing high-definition mapping of subsurface strategic and critical mineral natural resources, energy (including hydrocarbons)…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 22 contacts → | ||||
Indirect evidence “TMC, a Bureau Veritas Group Company and leading international marine consultancy, has been providing advice and support to the marine and offshore energy industries since 1979.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 20 contacts → | ||||
Indirect evidence “SAND Geophysics Ltd.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 20 contacts → | ||||
Partial evidence “Diving, Survey and Marine Contracting (DSMC).” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 19 contacts → | ||||
Indirect evidence “We are experts in marine geotechnics, geophysics, engineering geology and foundation engineering.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 18 contacts → | ||||
Indirect evidence “REDS provides specialist access and engineering services to marine and energy industries worldwide.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 17 contacts → | ||||
Indirect evidence “Modus is now Manta.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: coastal survey firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names coastal survey firms.
- Partial evidence
- Its own public description names part of coastal survey firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name coastal survey firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 175 coastal survey firms based in the United Kingdom
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Coastal survey firms based in the United Kingdom at a glance
As of Sep 19, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 175 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among coastal survey firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United Kingdom whose own description of what they do matches “coastal survey firms”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names coastal survey firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among coastal survey firms, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 1,375 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 19, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names coastal survey firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many coastal survey firms are there based in the United Kingdom?
RevenueBase identified 175 coastal survey firms headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Gardline Limited, headquartered in Great Yarmouth, tops this list with the largest team on record.
Which city has the most coastal survey firms?
London leads with 14 headquartered companies, followed by Aberdeen (5) and Lymington (5).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,375 verified decision-maker contacts tracked across these 175 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.