Company lists · Data refreshed September 2026

Top 25 Ocean survey technology companies based in the United Kingdom

Name: Ocean survey technology companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 262 companies tracked

RevenueBase identified 262 ocean survey technology companies headquartered in the United Kingdom as of September 2026 and tracks 7,356 professional contacts across them, including 3,086 with verified work emails. London is the largest hub.

This list covers ocean survey technology companies 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 20, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review

262Companies

7,356Contacts tracked

3,086Verified emails

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The 25 largest ocean survey technology companies based in the United Kingdom

Ranked by team size

Top 25 of 262 ocean survey technology companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to ocean survey technology companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Ocean Infinity	Strong evidence	London, United KingdomHQ checked Sep 20, 2026	501-1,000	714 contacts →
	Strong evidence “Ocean Infinity is a technology-driven company transforming how ocean operations are carried out.” Source: RevenueBase Database · checked Sep 20, 2026
2	Gardline Limited	Partial evidence	Great Yarmouth, United KingdomHQ checked Sep 20, 2026	501-1,000	545 contacts →
	Partial evidence “Gardline is a best-in-class provider of geophysical, geotechnical and environmental marine surveys.” Source: RevenueBase Database · checked Sep 20, 2026
3	UTEC	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 20, 2026	201-500	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 20, 2026
4	James Fisher And Sons PLC	Partial evidence	Barrow-in-furness, United KingdomHQ checked Sep 20, 2026	1,001-5,000	403 contacts →
	Partial evidence “Above, below and beyond the world’s oceans.” Source: RevenueBase Database · checked Sep 20, 2026
5	Sperry Marine	Indirect evidence	New Malden, United KingdomHQ checked Sep 20, 2026	201-500	279 contacts →
	Indirect evidence “Sperry Marine provides the commercial and defence maritime industry with Navigation Solutions that excel in efficiency, reliability and safety.” Source: RevenueBase Database · checked Sep 20, 2026
6	Sonardyne International LTD	Indirect evidence	Yateley, United KingdomHQ checked Sep 20, 2026	201-500	273 contacts →
	Indirect evidence “Underwater innovations for energy, defence and science.” Source: RevenueBase Database · checked Sep 20, 2026
7	Sulmara	Indirect evidence	Glasgow, United KingdomHQ checked Sep 20, 2026	201-500	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 20, 2026
8	Orca AI	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	51-200	132 contacts →
	Indirect evidence “Founded in 2018 by a team of Navy veterans, Orca AI, a maritime tech startup, empowers shipping companies to enhance their operational safety, efficiency, and sustainability…” Source: RevenueBase Database · checked Sep 20, 2026
9	SRT Marine Systems PLC	Partial evidence	Midsomer Norton, United KingdomHQ checked Sep 20, 2026	51-200	129 contacts →
	Partial evidence “SRT Marine Systems PLC is a global leader and innovator in maritime surveillance, intelligence, navigation safety and situational awareness.” Source: RevenueBase Database · checked Sep 20, 2026
10	Spectec	Partial evidence	Manchester, United KingdomHQ checked Sep 20, 2026	51-200	113 contacts →
	Partial evidence “SpecTec is a market-leading maritime technology company specialising in asset management software.” Source: RevenueBase Database · checked Sep 20, 2026
11	James Fisher Offshore	Indirect evidence	Oldmeldrum, United KingdomHQ checked Sep 20, 2026	51-200	107 contacts →
	Indirect evidence “James Fisher Offshore (JFO) is an international supplier of marine back deck, specialist subsea equipment and engineering services supporting the global subsea contractors across…” Source: RevenueBase Database · checked Sep 20, 2026
12	EGS International	Partial evidence	Bordon, United KingdomHQ checked Sep 20, 2026	51-200	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 20, 2026
13	Veripos	Partial evidence	Aberdeen, United KingdomHQ checked Sep 20, 2026	51-200	73 contacts →
	Partial evidence “Veripos, part of Hexagon, is a global technology leader, pioneering end-to-end assured positioning solutions for the offshore marine oil and gas industry.” Source: RevenueBase Database · checked Sep 20, 2026
14	Abpmer	Indirect evidence	Southampton, United KingdomHQ checked Sep 20, 2026	51-200	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 20, 2026
15	Seiche	Partial evidence	Holsworthy, United KingdomHQ checked Sep 20, 2026	51-200	59 contacts →
	Partial evidence “Seiche provides marine technology and environmental service solutions for the offshore marine industries.” Source: RevenueBase Database · checked Sep 20, 2026
16	Benthic Solutions Limited	Partial evidence	Hoveton, United KingdomHQ checked Sep 20, 2026	11-50	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 20, 2026
17	Edwards Diving Services LTD	Indirect evidence	Pontypridd, United KingdomHQ checked Sep 20, 2026	51-200	46 contacts →
	Indirect evidence “EDWARDS DIVING SERVICES LIMITED (EDS) is a specialist Marine & Civil Engineering company located in South Wales, United Kingdom.” Source: RevenueBase Database · checked Sep 20, 2026
18	Teledyne Valeport	Indirect evidence	Totnes, United KingdomHQ checked Sep 20, 2026	51-200	43 contacts →
	Indirect evidence “Valeport is an independently owned manufacturer of Oceanographic & Hydrometric Equipment and Instrumentation.” Source: RevenueBase Database · checked Sep 20, 2026
19	Msubs LTD	Partial evidence	Plymouth, United KingdomHQ checked Sep 20, 2026	11-50	42 contacts →
	Partial evidence “An independent company specialising in the provision of Manned and Unmanned Submarines / Vehicles for defence, research, commercial survey and for fun.” Source: RevenueBase Database · checked Sep 20, 2026
20	Coda Octopus Products	Partial evidence	Edinburgh, United KingdomHQ checked Sep 20, 2026	51-200	41 contacts →
	Partial 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 20, 2026
21	Spectrum	Partial evidence	Lymington, United KingdomHQ checked Sep 20, 2026	11-50	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 20, 2026
22	Forcys	Partial evidence	Yateley, United KingdomHQ checked Sep 20, 2026	11-50	36 contacts →
	Partial evidence “We solve the defence challenges of today and tomorrow, enabling navies to dominate the underwater battlespace through next generation situational awareness technology.” Source: RevenueBase Database · checked Sep 20, 2026
23	Partrac	Indirect evidence	Glasgow, United KingdomHQ checked Sep 20, 2026	11-50	35 contacts →
	Indirect evidence “We are experts in metocean, floating LiDAR seabed measurement, analyses and critical advice.” Source: RevenueBase Database · checked Sep 20, 2026
24	Acua Ocean	Partial evidence	Plymouth, United KingdomHQ checked Sep 20, 2026	11-50	35 contacts →
	Partial evidence “ACUA Ocean designs and develops uncrewed surface vessels (USV) for ocean monitoring and data collection, providing a stable open ocean platform to deploy autonomous and remotely…” Source: RevenueBase Database · checked Sep 20, 2026
25	Csignum	Indirect evidence	Bathgate, United KingdomHQ checked Sep 20, 2026	11-50	33 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026

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: ocean survey technology companies. 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 ocean survey technology companies.
Partial evidence: Its own public description names part of ocean survey technology companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name ocean survey technology companies. 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 262 ocean survey technology companies based in the United Kingdom

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Ocean survey technology companies based in the United Kingdom at a glance

As of Sep 20, 2026

42.0%Verified-email coverage

28.1Average contacts per company

1-10Median size (employees)

9.2%Largest-city concentration · London

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

139

11-50

51-200

201-500

501-1,000

1,001-5,000

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 262 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 ocean survey technology companies, 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 “ocean survey technology companies”. 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 ocean survey technology companies), 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 ocean survey technology companies, 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, 3,086 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 20, 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 ocean survey technology companies, 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 ocean survey technology companies are there based in the United Kingdom?

RevenueBase identified 262 ocean survey technology companies 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?

Ocean Infinity, headquartered in London, tops this list with the largest team on record.

Which city has the most ocean survey technology companies?

London leads with 24 headquartered companies, followed by Aberdeen (23) and Edinburgh (6).

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 3,086 verified decision-maker contacts tracked across these 262 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 20, 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.