Company lists · Data refreshed September 2026

Top 25 Offshore drilling vessel operators based in the United Kingdom

RevenueBase identified 149 company matches for offshore drilling vessel operators associated with the United Kingdom as of September 2026 and tracks 20,283 professional contacts across them, including 4,030 with verified work emails. London is the largest hub.

This list covers company matches for offshore drilling vessel 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 20, 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 20, 2026 How this list was built
149Companies
20,283Contacts tracked
4,030Verified emails
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The 25 largest offshore drilling vessel operators based in the United Kingdom

Ranked by team size
Top 25 of 149 company matches for offshore drilling vessel operators based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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 20, 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 20, 2026 · View company records in RevenueBase
2Exact matchAberdeen, United KingdomHQ recorded Sep 20, 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 20, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Sep 20, 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 20, 2026 · View company records in RevenueBase
4Exact matchAberdeenshire, United KingdomHQ recorded Sep 20, 2026501-1,000955 contacts →

Exact match

“Altera Infrastructure is a leading global energy infrastructure services group focused on the ownership and operation of offshore energy assets.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact matchAberdeen, United KingdomHQ recorded Sep 20, 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 20, 2026 · View company records in RevenueBase
6Exact matchGreat Yarmouth, United KingdomHQ recorded Sep 20, 2026501-1,000545 contacts →

Exact match

“Gardline is a best-in-class provider of geophysical, geotechnical and environmental marine surveys.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchAberdeen, United KingdomHQ recorded Sep 20, 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 20, 2026 · View company records in RevenueBase
8Exact matchBurntisland, United KingdomHQ recorded Sep 20, 2026501-1,000387 contacts →

Exact match

“Briggs Marine is a leading provider of marine and environmental services, specialising in port and marine operations, subsea and environmental support and vessel charter.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchWesthill, United KingdomHQ recorded Sep 20, 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 20, 2026 · View company records in RevenueBase
10Exact matchAberdeen, United KingdomHQ recorded Sep 20, 202651-200249 contacts →

Exact match

“An International Shipowning and Marine Investment Company.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchAberdeen, United KingdomHQ recorded Sep 20, 2026501-1,000202 contacts →

Exact match

“Swire Energy Services, part of the global conglomerate, the Swire group, is the world's largest supplier of specialist offshore cargo carrying units to the global energy industry…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchPortlethen, United KingdomHQ recorded Sep 20, 2026201-500184 contacts →

Exact match

“Fletcher operate and manage a modern fleet of Offshore Platform Supply Vessels, employing over 300 people to support our operations.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchNorwich, United KingdomHQ recorded Sep 20, 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 20, 2026 · View company records in RevenueBase
14Exact matchTendring, United KingdomHQ recorded Sep 20, 202611-50137 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchAberdeen, United KingdomHQ recorded Sep 20, 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 20, 2026 · View company records in RevenueBase
16Exact matchHolyhead, United KingdomHQ recorded Sep 20, 202651-20075 contacts →

Exact match

“Holyhead Towing Company (Est.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchDyce, United KingdomHQ recorded Sep 20, 202611-5063 contacts →

Exact match

“Global Resources supply Drill Crew to the UK and International Oil & Gas Industry Our experience means we understand the need for QUALITY & COMPETENT crew.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchSwansea, United KingdomHQ recorded Sep 20, 202651-20061 contacts →

Exact match

“Purus HST is a division of Purus, a world leader in providing energy customers with maritime services to the offshore wind and gas transport industries.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchAberdeen, United KingdomHQ recorded Sep 20, 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 20, 2026 · View company records in RevenueBase
20Exact matchCowes, United KingdomHQ recorded Sep 20, 202651-20055 contacts →

Exact match

“We are a class leading wind farm vessel support operator, operating internationally out of Cowes, UK, with a fleet of fourteen IACS classified multi-purpose offshore energy…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchIsle Of Mull, United KingdomHQ recorded Sep 20, 202651-20049 contacts →

Exact match

“Inverlussa is one of the leading workboat operators in the aquaculture industry in Scotland and has experience in the offshore renewables industry.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchAberdeen, United KingdomHQ recorded Sep 20, 202651-20037 contacts →

Exact match

“We are a dynamic team with over 20 years experience servicing the Mobile Offshore Drilling Unit market around the World.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23Exact matchAberdeen, United KingdomHQ recorded Sep 20, 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 20, 2026 · View company records in RevenueBase
24Exact matchLondon, United KingdomHQ recorded Sep 20, 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 20, 2026 · View company records in RevenueBase
25Exact matchAberdeen, United KingdomHQ recorded Sep 20, 202611-5028 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

Showing 25 of 149 offshore drilling vessel operators based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 4,030 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Offshore drilling vessel operators based in the United Kingdom at a glance

As of Sep 20, 2026
19.9%Verified-email coverage
136.1Average contacts per company
11-50Median size (employees)
18.8%Largest-city concentration · London
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
56
11-50
38
51-200
22
201-500
10
501-1,000
13
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 149 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 “offshore drilling vessel 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 4,030 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 20, 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 “offshore drilling vessel operators”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many offshore drilling vessel operators are there based in the United Kingdom?

RevenueBase identified 149 company matches for offshore drilling vessel 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 offshore drilling vessel operators?

London leads with 28 company records, followed by Aberdeen (27) 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 4,030 professional contacts with verified work emails tracked across these 149 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 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 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.