Company lists · Data refreshed September 2026

Top 25 Domestic oil drilling companies based in the United Kingdom

Name: Domestic oil drilling 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 21, 2026 152 companies tracked

RevenueBase identified 152 domestic oil drilling companies headquartered in the United Kingdom as of September 2026 and tracks 19,128 professional contacts across them, including 3,011 with verified work emails. London is the largest hub.

This list covers domestic oil drilling 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 21, 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 21, 2026 86% judged on-target in blind review

152Companies

19,128Contacts tracked

3,011Verified emails

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The 25 largest domestic oil drilling companies based in the United Kingdom

Ranked by team size

Top 25 of 152 domestic oil drilling companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to domestic oil drilling 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	Ensco PLC	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	5,001-10,000	2,679 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026
2	Odfjell Drilling	Partial evidence	Aberdeen, United KingdomHQ checked Sep 21, 2026	1,001-5,000	1,864 contacts →
	Partial evidence “Odfjell Drilling is an international drilling company with around 1,500 employees with operations around the world.” Source: RevenueBase Database · checked Sep 21, 2026
3	Borr Drilling	Strong evidence	London, United KingdomHQ checked Sep 21, 2026	1,001-5,000	1,699 contacts →
	Strong evidence “Borr Drilling Limited is an offshore shallow-water drilling contractor providing worldwide offshore drilling services to the oil and gas industry.” Source: RevenueBase Database · checked Sep 21, 2026
4	Hunting	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	1,001-5,000	1,211 contacts →
	Partial evidence “HUNTING is an energy services provider to the world's leading national and international oil and gas companies, manufacturing and distributing products that enable the extraction…” Source: RevenueBase Database · checked Sep 21, 2026
5	Excellence Logging	Indirect evidence	London W2 2es, United KingdomHQ checked Sep 21, 2026	1,001-5,000	933 contacts →
	Indirect evidence “Excellence Logging is an established energy services provider focused on optimizing well performance.” Source: RevenueBase Database · checked Sep 21, 2026
6	Dolphin Drilling	Partial evidence	Aberdeen, United KingdomHQ checked Sep 21, 2026	201-500	694 contacts →
	Partial evidence “Dolphin Drilling is the offshore drilling pioneer of the past and for the future.” Source: RevenueBase Database · checked Sep 21, 2026
7	Assala Energy	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	201-500	655 contacts →
	Partial evidence “Assala Energy is an oil exploration and production company.” Source: RevenueBase Database · checked Sep 21, 2026
8	Energean	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	501-1,000	587 contacts →
	Indirect evidence “Established in 2007, Energean is a London-listed FTSE 250 and Tel Aviv-listed TA-90 E&P company with operations in the Europe, Middle East and Africa (“EMEA”) region.” Source: RevenueBase Database · checked Sep 21, 2026
9	Northern Petroleum PLC	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	n/a	314 contacts →
	Partial evidence “Northern Petroleum is an oil and gas exploration and production company quoted on the AIM Market of the London Stock Exchange.” Source: RevenueBase Database · checked Sep 21, 2026
10	Hobark International Limited	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	201-500	113 contacts →
	Indirect evidence “Hobark International Limited (HIL) is an Integrated Services Company whose subsidiaries: DrillPet International Limited (DIL), Uniterm Nigeria Limited (UNL), UltiProc Nigeria…” Source: RevenueBase Database · checked Sep 21, 2026
11	Derrick Services UK LTD	Partial evidence	Great Yarmouth, United KingdomHQ checked Sep 21, 2026	51-200	111 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 21, 2026
12	Awilco Drilling	Partial evidence	Aberdeen, United KingdomHQ checked Sep 21, 2026	51-200	88 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026
13	RDS	Strong evidence	Aberdeen, United KingdomHQ checked Sep 21, 2026	1,001-5,000	70 contacts →
	Strong evidence “RDS is an engineering specialist working for oil and gas companies and major topsides and drilling contractors.” Source: RevenueBase Database · checked Sep 21, 2026
14	Saltire Energy Group	Strong evidence	Aberdeen, United KingdomHQ checked Sep 21, 2026	51-200	51 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026
15	Gorevega	Strong evidence	Aberdeen, United KingdomHQ checked Sep 21, 2026	51-200	37 contacts →
	Strong evidence “GoreVega supports the global oil and gas industry by providing valuable technical expertise for operators and service companies at each stage of a well’s lifecycle, from drilling…” Source: RevenueBase Database · checked Sep 21, 2026
16	Heritage OIL Limited	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	201-500	26 contacts →
	Partial evidence “Heritage Oil Limited is an independent and privately owned oil & gas exploration and operating company” Source: RevenueBase Database · checked Sep 21, 2026
17	Drilcorp	Partial evidence	Seaham, United KingdomHQ checked Sep 21, 2026	11-50	21 contacts →
	Partial evidence “Drilcorp was established in 1992 and since then has developed into one of the UK’s top drilling companies.” Source: RevenueBase Database · checked Sep 21, 2026
18	Performance Energy LTD	Indirect evidence	Southampton, United KingdomHQ checked Sep 21, 2026	1-10	18 contacts →
	Indirect evidence “About: Who is Performance Energy?” Source: RevenueBase Database · checked Sep 21, 2026
19	Ardyne Technologies	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 21, 2026	51-200	16 contacts →
	Indirect evidence “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 /…” Source: RevenueBase Database · checked Sep 21, 2026
20	British Drilling And Freezing Company Limited	Partial evidence	Nottingham, United KingdomHQ checked Sep 21, 2026	11-50	14 contacts →
	Partial evidence “British Drilling and Freezing Company Limited (BDF) and its Boldon Drilling and BB Drilling divisions, is the UK's largest onshore drilling contractor.” Source: RevenueBase Database · checked Sep 21, 2026
21	Midcontinent Aberdeen Limited	Partial evidence	Aberdeen, United KingdomHQ checked Sep 21, 2026	11-50	13 contacts →
	Partial evidence “Since opening in Aberdeen in 1973 Midcontinent have excelled in sourcing and procuring products for use in Drilling, Production, Engineering and Energy related industries.” Source: RevenueBase Database · checked Sep 21, 2026
22	Petroxin	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	13 contacts →
	Partial evidence “PETROXIN is an international upstream oil and gas company providing technical expertise and cost-effective full life-cycle integrated solutions to global clients of operators and…” Source: RevenueBase Database · checked Sep 21, 2026
23	One&zero	Partial evidence	Aberdeen, United KingdomHQ checked Sep 21, 2026	11-50	12 contacts →
	Partial evidence “Wireline \| Interventions \| Drilling \| MLWD – Operations Assurance: At one & zero, we are committed to driving unparalleled performance and delivering exceptional results in…” Source: RevenueBase Database · checked Sep 21, 2026
24	AOT	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	12 contacts →
	Indirect evidence “AOT is an energy services company serving our customers with oilfield products and services and support the industry in the energy transition.” Source: RevenueBase Database · checked Sep 21, 2026
25	EOS Europe LTD	Strong evidence	Aberdeen, United KingdomHQ checked Sep 21, 2026	11-50	11 contacts →
	Strong evidence “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.” Source: RevenueBase Database · checked Sep 21, 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: domestic oil drilling 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 domestic oil drilling companies.
Partial evidence: Its own public description names part of domestic oil drilling companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name domestic oil drilling 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 152 domestic oil drilling companies based in the United Kingdom

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Domestic oil drilling companies based in the United Kingdom at a glance

As of Sep 21, 2026

15.7%Verified-email coverage

125.8Average contacts per company

1-10Median size (employees)

23.0%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 152 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 domestic oil drilling 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 “domestic oil drilling 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 domestic oil drilling 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 domestic oil drilling 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, 3,011 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 21, 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.

Domestic oil drilling companies by metro

Domestic oil drilling companies in London35

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 domestic oil drilling 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 domestic oil drilling companies are there based in the United Kingdom?

RevenueBase identified 152 domestic oil drilling 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?

Ensco PLC, headquartered in London, tops this list with the largest team on record.

Which city has the most domestic oil drilling companies?

London leads with 35 headquartered companies, followed by Aberdeen (23) and Dundee (3).

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 3,011 verified decision-maker contacts tracked across these 152 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 21, 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.