Company lists · Data refreshed September 2026

Top 25 Oil and gas consulting firms based in London, United Kingdom

Name: Oil and gas consulting firms based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 13, 2026 188 companies tracked

RevenueBase identified 188 oil and gas consulting firms headquartered in London, United Kingdom as of September 2026 and tracks 4,234 professional contacts across them, including 1,666 with verified work emails and 283 with mobile numbers. Across the United Kingdom, London is the largest hub for this category.

This list covers oil and gas consulting firms headquartered in London, 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 13, 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 13, 2026 86% judged on-target in blind review

188Companies

4,234Contacts tracked

1,666Verified emails

283Mobile numbers

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The 25 largest oil and gas consulting firms based in London, United Kingdom

Ranked by team size

Top 25 of 188 oil and gas consulting firms based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 13, 2026. RevenueBase Smart Search rates how each company's information relates to oil and gas consulting firms: 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	ABL	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1,001-5,000	804 contacts →
	Indirect evidence “The Energy and Marine Consultants - an Aqualis company.” Source: RevenueBase Database · checked Sep 13, 2026
2	Genesis	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	501-1,000	401 contacts →
	Indirect evidence “Genesis is a market-leading advisory company focused on providing high-value technical and advisory services for the energy industry.” Source: RevenueBase Database · checked Sep 13, 2026
3	Hobark International Limited	Indirect evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
4	CTS Offshore & Marine	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	106 contacts →
	Indirect evidence “CTS Offshore & Marine Ltd is an independent provider of engineering services tailored for energy and material markets.” Source: RevenueBase Database · checked Sep 13, 2026
5	Euro Petroleum Consultants	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	66 contacts →
	Strong evidence “We are a leading independent consulting company with global expertise in Refining, Gas, Petrochemicals, Renewables, and Alternative Energies.” Source: RevenueBase Database · checked Sep 13, 2026
6	Nexanteca, Energy And Chemicals Advisory	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	58 contacts →
	Indirect evidence “NexantECA, the Energy and Chemicals Advisory company is the leading advisor to the energy, refining, and chemical industries.” Source: RevenueBase Database · checked Sep 13, 2026
7	OPC	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	58 contacts →
	Partial evidence “OPC is a leading global energy consultancy specialising in providing clients with top-tier expertise and innovative solutions across the upstream E&P, Gas and CO2 storage domains…” Source: RevenueBase Database · checked Sep 13, 2026
8	Mobility OIL & GAS Limited	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	48 contacts →
	Strong evidence “Mobility Oil & Gas provides comprehensive services to the oil and gas industry in the areas of Petroleum Engineering Consultancy and Technical Training.” Source: RevenueBase Database · checked Sep 13, 2026
9	GAS Strategies	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	45 contacts →
	Partial evidence “In a world where speed is a competitive advantage, Gas Strategies accelerates your route to readiness.” Source: RevenueBase Database · checked Sep 13, 2026
10	Islay Subsurface & Engineering LTD	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	17 contacts →
	Strong evidence “Islay Subsurface & Engineering Ltd was founded in 2010 by Iain Whyte to provide support to oil and gas operators, and their partners.” Source: RevenueBase Database · checked Sep 13, 2026
11	Telosnrg	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	15 contacts →
	Strong evidence “Welcome to Telos, partnering with a broad range of global clients, and their advisers, throughout the oil and gas, renewables, and alternative energy industry.” Source: RevenueBase Database · checked Sep 13, 2026
12	Nventures LTD	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	13 contacts →
	Indirect evidence “The best way to address subsurface risk in exploration is by industry collaboration.” Source: RevenueBase Database · checked Sep 13, 2026
13	Petroxin	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	13 contacts →
	Strong 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 13, 2026
14	Highbridge Partners	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	12 contacts →
	Indirect evidence “Highbridge Partners is a specialist Energy and Commodity Executive Search and Advisory firm partnering with a broad selection of global clients across EMEA, Asia-Pacific and The…” Source: RevenueBase Database · checked Sep 13, 2026
15	Citac Africa LTD	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	11 contacts →
	Indirect evidence “CITAC Africa Ltd is a UK-based, independent consultancy company focusing on the downstream African Energy market.” Source: RevenueBase Database · checked Sep 13, 2026
16	Acrometis UK	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	11 contacts →
	Strong evidence “Acrometis is a consultancy formed by senior oil and gas industry professionals, which helps energy companies improve the sustainable performance of their assets by enhancing…” Source: RevenueBase Database · checked Sep 13, 2026
17	FGE	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	11 contacts →
	Strong evidence “FGE is a preeminent global oil and gas consultancy which provides leading independent research, analysis, consultation, and advisory services to a large and diverse client base…” Source: RevenueBase Database · checked Sep 13, 2026
18	Syntillica	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	11 contacts →
	Indirect evidence “Syntillica is an independent energy consultancy group with more than 200 talented experts with experience across more than 100 countries We provide Energy Experts on Demand across…” Source: RevenueBase Database · checked Sep 13, 2026
19	Holt Energy Advisors	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	8 contacts →
	Indirect evidence “HEA is an energy advisory company delivering expert commercial, legal and transaction advisory solutions to the energy sector.” Source: RevenueBase Database · checked Sep 13, 2026
20	Pveconsulting	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	7 contacts →
	Partial evidence “The firm is engaged with a number of oil and exploration companies, across Africa and other regions, with high level mandates in transaction support and exploration campaigns.” Source: RevenueBase Database · checked Sep 13, 2026
21	EPEUS	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	6 contacts →
	Partial evidence “Epeus provides niche consulting services to the Energy Industry.” Source: RevenueBase Database · checked Sep 13, 2026
22	Blackgold Consulting	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	6 contacts →
	Partial evidence “Blackgold Consulting provides a personal, efficient and discreet approach to executive search.” Source: RevenueBase Database · checked Sep 13, 2026
23	Bedrock Drilling Limited	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	6 contacts →
	Indirect evidence “Bedrock Drilling offers a comprehensive, London-based, drilling consultancy service that is cost effective and aligned with our client goals and expectations.” Source: RevenueBase Database · checked Sep 13, 2026
24	Channoil Energy	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	5 contacts →
	Indirect evidence “ENERGY SECTOR CONSULTANTS We are a market-leading provider of expertise to the energy industry worldwide.” Source: RevenueBase Database · checked Sep 13, 2026
25	Exploreterra	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	1-10	5 contacts →
	Indirect evidence “ExploreTerra's vision is to contribute to the geoscience consultancy and training landscape.” Source: RevenueBase Database · checked Sep 13, 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: oil and gas consulting firms. 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 oil and gas consulting firms.
Partial evidence: Its own public description names part of oil and gas consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name oil and gas consulting firms. 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 188 oil and gas consulting firms based in London, United Kingdom

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Oil and gas consulting firms based in London, United Kingdom at a glance

As of Sep 13, 2026

39.3%Verified-email coverage

6.7%Mobile-number coverage

22.5Average contacts per company

1-10Median size (employees)

Sep 13, 2026Page data refreshed

Companies by employee count

1-10

109

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 16.0d

1,2900–30

36531–60

1061–90

090–180

1180+

Company record updated

Median 77.0d

00–30

1,43431–60

2,05961–90

51490–180

227180+

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 oil and gas consulting firms, 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 London, United Kingdom whose own description of what they do matches “oil and gas consulting firms”. 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 oil and gas consulting firms), 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 oil and gas consulting firms, and records with no verified work email. Companies headquartered outside London 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, 1,666 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 13, 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.

Oil and gas consulting firms by metro in the United Kingdom

Oil and gas consulting firms in Aberdeen125

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 oil and gas consulting firms, 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 oil and gas consulting firms are there based in London, United Kingdom?

RevenueBase identified 188 oil and gas consulting firms headquartered in London, 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?

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

Which city in the United Kingdom has the most oil and gas consulting firms?

London leads the United Kingdom with 188 headquartered companies, followed by Aberdeen (125) and Edinburgh (19).

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 1,666 verified decision-maker contacts tracked across these 188 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 13, 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.