Company lists · Data refreshed September 2026

Top 24 Semi-submersible rig operators based in the United Kingdom

RevenueBase identified 91 company matches for semi-submersible rig operators associated with the United Kingdom as of September 2026 and tracks 17,109 professional contacts across them, including 3,164 with verified work emails. Aberdeen is the largest hub.

This list covers company matches for semi-submersible rig operators 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 22, 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 22, 2026 How this list was built
91Companies
17,109Contacts tracked
3,164Verified emails
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The 24 largest semi-submersible rig operators based in the United Kingdom

Ranked by team size
Top 24 of 91 company matches for semi-submersible rig operators based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 22, 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 22, 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 22, 2026 · View company records in RevenueBase
2Exact matchAberdeen, United KingdomHQ recorded Sep 22, 20261,001-5,0001,864 contacts →

Exact match

“Odfjell Drilling is an international drilling company with around 1,500 employees with operations around the world.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Sep 22, 20261,001-5,0001,699 contacts →

Exact match

“Borr Drilling Limited is an offshore shallow-water drilling contractor providing worldwide offshore drilling services to the oil and gas industry.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
4Exact matchAberdeen, United KingdomHQ recorded Sep 22, 2026201-500694 contacts →

Exact match

“Dolphin Drilling is the offshore drilling pioneer of the past and for the future.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
5Exact matchAberdeen, United KingdomHQ recorded Sep 22, 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 22, 2026 · View company records in RevenueBase
6Exact matchWesthill, United KingdomHQ recorded Sep 22, 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 22, 2026 · View company records in RevenueBase
7Exact matchAberdeen, United KingdomHQ recorded Sep 22, 202651-200249 contacts →

Exact match

“An International Shipowning and Marine Investment Company.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
8Exact matchGreat Yarmouth, United KingdomHQ recorded Sep 22, 202651-200111 contacts →

Exact match

“Derrick Service UK Ltd (DSL) is a diversified oil & gas construction company which provides a broad range of products and services to the market from our Worldwide locations.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
9Exact matchAberdeen, United KingdomHQ recorded Sep 22, 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 22, 2026 · View company records in RevenueBase
10Exact matchAberdeen, United KingdomHQ recorded Sep 22, 20261,001-5,00070 contacts →

Exact match

“RDS is an engineering specialist working for oil and gas companies and major topsides and drilling contractors.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
11Exact matchAberdeen, United KingdomHQ recorded Sep 22, 202651-20055 contacts →

Exact match

“First Marine Solutions is a leading international energy service and equipment organisation with operations worldwide, We provide expertise, technology, techniques and support…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
12Exact matchSouthampton, United KingdomHQ recorded Sep 22, 202611-5050 contacts →

Exact match

“Crondall Energy is an independent offshore energy consultancy specialising in floating and subsea facilities.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
13Exact matchAberdeen, United KingdomHQ recorded Sep 22, 202611-5033 contacts →

Exact match

“TIS Manufacturing is a specialist in the design, manufacture, refurbishment and rental of well service and subsea control equipment for the oil and gas industry.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Sep 22, 202611-5030 contacts →

Exact match

“Our global organic talent allows us to deliver specialized knowledge and solutions for offshore operations to our clients around the world.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
15Exact matchAberdeen, United KingdomHQ recorded Sep 22, 202611-5028 contacts →

Exact match

“Innovo is an engineering, construction and equipment rental company.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
16Exact matchAberdeen, United KingdomHQ recorded Sep 22, 202651-20016 contacts →

Exact match

“Ardyne develops and supplies specialised technology and services to the global energy industry, focusing on reducing rig time spent on downhole casing removal in slot recovery /…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
17Exact matchAberdeen, United KingdomHQ recorded Sep 22, 202611-5012 contacts →

Exact match

“Wireline | Interventions | Drilling | MLWD – Operations Assurance: At one & zero, we are committed to driving unparalleled performance and delivering exceptional results in…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
18Exact matchAberdeen, United KingdomHQ recorded Sep 22, 202611-5012 contacts →

Exact match

“OceanTools is a world leading subsea engineering company specialising in the design and manufacture of equipment for the professional offshore and underwater markets.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
19Exact matchAberdeen, United KingdomHQ recorded Sep 22, 202611-5011 contacts →

Exact match

“EOS Europe Ltd (EOS) deliver a range of specialist services to the oil and gas industry, specifically focusing on the offshore drilling and production markets.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
20Exact matchAberdeen, United KingdomHQ recorded Sep 22, 202611-5010 contacts →

Exact match

“DOF Management AS DOF was founded in 1981 and is today an international group of companies which owns and operates a modern fleet of offshore-/subsea vessels and owns engineering…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
21Exact matchOldmeldrum, United KingdomHQ recorded Sep 22, 202611-507 contacts →

Exact match

“Subsea Tooling Services UK Ltd (STS) is the brainchild of three experienced individuals who want to bring new and exciting innovations to the Subsea Oil and Gas sector.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Sep 22, 202611-506 contacts →

Exact match

“We are a professional, innovative, experienced supplier of maintenance contractor solutions to the offshore drilling sector.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
23Exact matchBootle, United KingdomHQ recorded Sep 22, 202651-2006 contacts →

Exact match

“Hughes Subsea Services Limited, an OEG Group company, was founded in 2019 and employs a highly skilled Subsea team with over 100 years of combined experience in Underwater &…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
24Exact matchAberdeen, United KingdomHQ recorded Sep 22, 202611-504 contacts →

Exact match

“Based in Aberdeen, BSV have been servicing clients both in the UK and Internationally since 1984.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase

Showing 24 of 91 semi-submersible rig operators based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 3,164 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Semi-submersible rig operators based in the United Kingdom at a glance

As of Sep 22, 2026
18.5%Verified-email coverage
188.0Average contacts per company
11-50Median size (employees)
29.7%Largest-city concentration · Aberdeen
Sep 22, 2026Page data refreshed

Companies by employee count

1-10
28
11-50
26
51-200
16
201-500
7
501-1,000
5
1,001-5,000
7
5,001-10,000
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 91 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 “semi-submersible rig operators” 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 3,164 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 22, 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 “semi-submersible rig operators”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many semi-submersible rig operators are there based in the United Kingdom?

RevenueBase identified 91 company matches for semi-submersible rig operators 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 semi-submersible rig operators?

Aberdeen leads with 27 company records, followed by London (19) and Westhill (5).

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 3,164 professional contacts with verified work emails tracked across these 91 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 22, 2026.

Ready to reach these companies? Verified emails and direct dials for all 91 semi-submersible rig operators 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.