Company lists · Data refreshed November 2026

Top 25 Underwater cable testing services based in the United Kingdom

RevenueBase identified 65 company matches for underwater cable testing services associated with the United Kingdom as of November 2026 and tracks 1,020 professional contacts across them, including 274 with verified work emails. Aberdeen is the largest hub.

This list covers company matches for underwater cable testing services associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
65Companies
1,020Contacts tracked
274Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest underwater cable testing services based in the United Kingdom

Ranked by team size
Top 25 of 65 company matches for underwater cable testing services based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchChelmsford, United KingdomHQ recorded Nov 6, 2026501-1,000371 contacts →

Exact match

“Global Marine is part of the Global Marine Group, and is a market leader in subsea cable installation and maintenance solutions to the telecoms and oil & gas sectors.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchChelmsford, United KingdomHQ recorded Nov 6, 202651-20081 contacts →

Exact match

“The Global Marine Group is a leading independent provider of submarine cable solutions offering a broad range of services including consultancy, installation and maintenance…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchMilton Keynes, United KingdomHQ recorded Nov 6, 202651-20062 contacts →

Exact match

“BASEC Group Limited, a part of Kiwa, is a global leader in product testing and certification services for power, energy, data/signal cables and ancillary products, in addition to…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchHalifax, United KingdomHQ recorded Nov 6, 202611-5035 contacts →

Exact match

“For the last 25 years, Group Management Electrical Surveys have been providing Electrical Inspection, Test and Documentation services to many of the UK's leading companies.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchRomsey, United KingdomHQ recorded Nov 6, 202611-5029 contacts →

Exact match

“A-2-Sea Solutions Ltd is a global telecommunications cable shore end and shallow water installation organisation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchFareham, United KingdomHQ recorded Nov 6, 202611-5025 contacts →

Exact match

“Red Penguin Marine provides specialist knowledge that is applicable and transferable to a wide range of issues across the submarine cable industry with multidisciplinary expertise…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchLinton, United KingdomHQ recorded Nov 6, 202611-5021 contacts →

Exact match

“Diving, Survey and Marine Contracting (DSMC).”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchNorthampton, United KingdomHQ recorded Nov 6, 202611-5020 contacts →

Exact match

“Fibre Optic Installation & Testing Specialists - FTTP Surveyors - UG/OH Cable Installation - Fault Finding - Maintaining Communications Networkse”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchEscrick, United KingdomHQ recorded Nov 6, 202611-5018 contacts →

Exact match

“We save our customers time and money testing subsea assets.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchGreat Chesterford, United KingdomHQ recorded Nov 6, 202651-20016 contacts →

Exact match

“Suppliers & manufacturers of submarine cables, connectors & hydrophone array systems for the underwater and nuclear industries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchMinety, United KingdomHQ recorded Nov 6, 202611-5014 contacts →

Exact match

“Pelagian, an OEG Renewables company is a leading provider of subsea engineering strategy and expertise around the globe.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchNorwich, United KingdomHQ recorded Nov 6, 202611-5013 contacts →

Exact match

“Atlantis Geoservices offer innovative and state-of-the-art seabed testing and sampling services for marine geotechnical site investigations.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchAberdeen, United KingdomHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“PMAC is a leading provider of a range of specialist corrosion underwater inspection services with thousands of km of pipeline survey, hundreds of Structures, and thousands of…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchRomsey, United KingdomHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“ETA provides specialist services to the subsea cable industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchChelmsford, United KingdomHQ recorded Nov 6, 202611-5010 contacts →

Exact match

“OceanIQ is part of the Global Marine Group, providing unparalleled subsea cable data, survey, route engineering, permitting and consultancy services for telecom and power cable…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchRochester, United KingdomHQ recorded Nov 6, 202611-508 contacts →

Exact match

“Power CSL is based in Rochester, Kent, UK where its directors and principal staff have many years experience in general cable, subsea cable and umbilical, and associated accessory…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchShrewsbury, United KingdomHQ recorded Nov 6, 20261-108 contacts →

Exact match

“Wootton & Wootton have been providing cable services on a nationwide basis for over several decades.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchPenzance, United KingdomHQ recorded Nov 6, 20261-107 contacts →

Exact match

“Formed from within the Submarine Cable Industry to provide high quality consultancy & implementation services to system vendors, system operators, system purchasers, owners and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchCroydon, United KingdomHQ recorded Nov 6, 20261-105 contacts →

Exact match

“The leading supplier of fault location and cable diagnostic test vans and systems in the UK.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchSeaton Delaval, United KingdomHQ recorded Nov 6, 20261-105 contacts →

Exact match

“A company specialising in the inspection and quality control of umbilicals, risers and flowlines for the oil and gas industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchHolmewood, United KingdomHQ recorded Nov 6, 20261-104 contacts →

Exact match

“England based Fibre Optic Repair and Test Specialists, Seismic equipment repair, Operating On and Offshore”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchCranfield, United KingdomHQ recorded Nov 6, 202611-504 contacts →

Exact match

“Aaxal specialises in offshore/underwater facilities inspection, engineering and training using innovative and cutting edge technologies to deliver services that impact on our…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchBournemouth, United KingdomHQ recorded Nov 6, 202611-504 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchBury St. Edmunds, United KingdomHQ recorded Nov 6, 202611-504 contacts →

Exact match

“SUBMARINE CABLE AND PIPELINE TRACKING SPECIALISTS We have over 30 years experience in the business of Submarine Cable and Pipeline surveyance.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchMaidstone, United KingdomHQ recorded Nov 6, 20261-103 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 65 underwater cable testing services based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 274 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Underwater cable testing services based in the United Kingdom at a glance

As of Nov 6, 2026
26.9%Verified-email coverage
15.7Average contacts per company
1-10Median size (employees)
6.2%Largest-city concentration · Aberdeen
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
35
11-50
21
51-200
4
201-500
2
501-1,000
1

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 65 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United Kingdom whose business descriptions match “underwater cable testing services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 274 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “underwater cable testing services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many underwater cable testing services are there based in the United Kingdom?

RevenueBase identified 65 company matches for underwater cable testing services associated with the United Kingdom as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Global Marine tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most underwater cable testing services?

Aberdeen leads with 4 company records, followed by London (4) and Chelmsford (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 274 professional contacts with verified work emails tracked across these 65 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.

Ready to reach these companies? Verified emails and direct dials for all 65 underwater cable testing services based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

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 SmartSearch, 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.