Company lists · Data refreshed September 2026

Top 25 Subsea drilling systems companies based in the United Kingdom

RevenueBase identified 173 company matches for subsea drilling systems companies associated with the United Kingdom as of September 2026 and tracks 15,472 professional contacts across them, including 4,001 with verified work emails. Aberdeen is the largest hub.

This list covers company matches for subsea drilling systems companies 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 September 16, 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 Sep 16, 2026 How this list was built
173Companies
15,472Contacts tracked
4,001Verified emails
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The 25 largest subsea drilling systems companies based in the United Kingdom

Ranked by team size
Top 25 of 173 company matches for subsea drilling systems companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 16, 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 matchLondon, United KingdomHQ recorded Sep 16, 20265,001-10,0002,679 contacts →

Exact match

“We Are Valaris With decades of expertise and strategic commitment built on efficiency, capability and ingenuity, our sights are continually set toward a future built with purpose…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
2Exact matchUsa, United KingdomHQ recorded Sep 16, 2026501-1,000665 contacts →

Exact match

“Delta Corporation specializes in the design and manufacture of API-compliant wellhead equipment and pressure control systems for both onshore and offshore oil and gas operations.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
3Exact matchAberdeen, United KingdomHQ recorded Sep 16, 2026201-500516 contacts →

Exact match

“Boskalis Subsea Services is a world-leading provider of specialist subsea solutions for the offshore energy industry, seamlessly integrating services to deliver optimum results.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
4Exact matchWesthill, United KingdomHQ recorded Sep 16, 2026501-1,000368 contacts →

Exact match

“Established in 1985, Ashtead Technology has grown organically and through strategic acquisition to become the leading provider of equipment rental solutions, advanced underwater…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
5Exact matchWallsend, United KingdomHQ recorded Sep 16, 202651-200292 contacts →

Exact match

“SMD is an advanced global designer and manufacturer of subsea remotely operated and autonomous power and control solutions.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
6Exact matchNorthumberland, United KingdomHQ recorded Sep 16, 2026201-500171 contacts →

Exact match

“Osbit’s vision is to unlock a clean energy future by creating smarter technology.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
7Exact matchNorwich, United KingdomHQ recorded Sep 16, 202651-200167 contacts →

Exact match

“Aquaterra Energy provides intelligently engineered products and services for well access and offshore developments - supporting efficient operations across the full life cycle of…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
8Exact matchBlyth, United KingdomHQ recorded Sep 16, 202651-200161 contacts →

Exact match

“The globally trusted delivery experts in installing and protecting critical subsea infrastructure.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
9Exact matchNewcastle Upon Tyne, United KingdomHQ recorded Sep 16, 2026201-500120 contacts →

Exact match

“BEL Valves designs, manufactures and maintains high integrity valves and actuators for subsea, surface and onshore applications.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
10Exact matchOldmeldrum, United KingdomHQ recorded Sep 16, 202651-200107 contacts →

Exact match

“James Fisher Offshore (JFO) is an international supplier of marine back deck, specialist subsea equipment and engineering services supporting the global subsea contractors across…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
11Exact matchOldmeldrum, United KingdomHQ recorded Sep 16, 202651-20088 contacts →

Exact match

“Pioneering Artificial Lift & Subsea Connector Technology RMSpumptools is established as a world leader in Artificial Lift Completion Technology and Subsea Connectors, providing…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
12Exact matchAberdeen, United KingdomHQ recorded Sep 16, 202651-20088 contacts →

Exact match

“Awilco Drilling Limited was incorporated in December 2009 in connection with the acquisition of the two semi submersible drilling rigs, WilPhoenix (previously Arctic II) and…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
13Exact matchSandbank, United KingdomHQ recorded Sep 16, 202651-20087 contacts →

Exact match

“Founded in 1992, Shearwater Marine Services have since grown to become a highly respected topside and sub-surface marine engineering service provider.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
14Exact matchTonbridge, United KingdomHQ recorded Sep 16, 202651-20077 contacts →

Exact match

“Jee is a leading independent multi-discipline subsea engineering and training company, delivering integrated services to the oil, gas and renewables industries.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
15Exact matchEllon, United KingdomHQ recorded Sep 16, 202651-20068 contacts →

Exact match

“Film-Ocean provides innovative subsea solutions to the global offshore energy industry.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
16Exact matchBournemouth, United KingdomHQ recorded Sep 16, 202651-20061 contacts →

Exact match

“Proud to be the world’s number one for advanced drilling simulator technology, dedicated to supporting a smarter, safer and more efficient workforce of the future.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
17Exact matchBristol, United KingdomHQ recorded Sep 16, 202611-5060 contacts →

Exact match

“Offshore Marine Management Holdings is a leading group of companies specialising in the delivery of subsea solutions to the offshore renewables, grid, telecommunications and oil &…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
18Exact matchHigh Wycombe, United KingdomHQ recorded Sep 16, 202651-20056 contacts →

Exact match

“Global leaders in the supply of subsea equipment within the oil & gas industry.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
19Exact matchWoking, United KingdomHQ recorded Sep 16, 202611-5056 contacts →

Exact match

“We design and supply products for the offshore and subsea industries; specialising in subsea and riser applications enduring fatigue, high strength steel and moving parts.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
20Exact matchAberdeen, United KingdomHQ recorded Sep 16, 202651-20051 contacts →

Exact match

“Established in 1986, Saltire Energy Group supplies high-quality drilling equipment to the global oil and gas industry from its headquarters in Aberdeen and seven bases around the…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
21Exact matchEdinburgh, United KingdomHQ recorded Sep 16, 202651-20041 contacts →

Exact match

“Coda Octopus is a global leader and specialist in underwater technologies including being the patent holder for the real-time 3D sonar, the Echoscope®.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
22Exact matchLancaster, United KingdomHQ recorded Sep 16, 202651-20041 contacts →

Exact match

“With over 30 years' experience; First Subsea are a trusted provider of subsea products for the offshore wind, oil and gas industries.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
23Exact matchDyce, United KingdomHQ recorded Sep 16, 202651-20040 contacts →

Exact match

“Omega Well Intervention is an innovative technology developer who design, engineer and manufacture downhole well Intervention tools for the global Oil and Gas industry.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
24Exact matchBromborough, United KingdomHQ recorded Sep 16, 202611-5039 contacts →

Exact match

“With a production and manufacturing facility in Bromborough, Wirral and an engineering office based in Knaphill, Surrey, Deepsea Technologies UK Ltd provides both diver-less and…”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
25Exact matchAberdeen, United KingdomHQ recorded Sep 16, 202611-5034 contacts →

Exact match

“EFC, an Oil States company, offers a multi-disciplined mechatronics approach to solving our client’s technical challenges in the oilfield drilling industry.”

Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase

Showing 25 of 173 subsea drilling systems companies based in the United Kingdom

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Subsea drilling systems companies based in the United Kingdom at a glance

As of Sep 16, 2026
25.9%Verified-email coverage
89.4Average contacts per company
11-50Median size (employees)
23.1%Largest-city concentration · Aberdeen
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
63
11-50
49
51-200
36
201-500
10
501-1,000
7
1,001-5,000
4
5,001-10,000
1
10001+
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 173 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 “subsea drilling systems companies” 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 4,001 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 September 16, 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 “subsea drilling systems companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many subsea drilling systems companies are there based in the United Kingdom?

RevenueBase identified 173 company matches for subsea drilling systems companies associated with the United Kingdom as of September 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?

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

Which city has the most subsea drilling systems companies?

Aberdeen leads with 40 company records, followed by London (14) and Westhill (7).

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 4,001 professional contacts with verified work emails tracked across these 173 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 September 16, 2026.

Ready to reach these companies? Verified emails and direct dials for all 173 subsea drilling systems companies based in the United Kingdom. Start with a free account, no credit card.

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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 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.