Company lists · Data refreshed September 2026

Top 25 Petroleum engineering consulting firms based in London, United Kingdom

Name: Petroleum engineering 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 29, 2026 103 companies tracked

RevenueBase identified 103 petroleum engineering consulting firms headquartered in London, United Kingdom as of September 2026 and tracks 2,046 professional contacts across them, including 807 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers petroleum engineering 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 29, 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 29, 2026 86% judged on-target in blind review

103Companies

2,046Contacts tracked

807Verified emails

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The 25 largest petroleum engineering consulting firms based in London, United Kingdom

Ranked by team size

Top 25 of 103 petroleum engineering consulting firms based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to petroleum engineering 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	Hobark International Limited	Indirect evidence	London, United KingdomHQ checked Sep 29, 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 29, 2026
2	CTS Offshore & Marine	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	51-200	106 contacts →
	Partial evidence “CTS Offshore & Marine Ltd is an independent provider of engineering services tailored for energy and material markets.” Source: RevenueBase Database · checked Sep 29, 2026
3	Euro Petroleum Consultants	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	51-200	66 contacts →
	Partial evidence “We are a leading independent consulting company with global expertise in Refining, Gas, Petrochemicals, Renewables, and Alternative Energies.” Source: RevenueBase Database · checked Sep 29, 2026
4	OPC	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	51-200	58 contacts →
	Indirect 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 29, 2026
5	Mobility OIL & GAS Limited	Strong evidence	London, United KingdomHQ checked Sep 29, 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 29, 2026
6	Islay Subsurface & Engineering LTD	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	17 contacts →
	Partial 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 29, 2026
7	Petroxin	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	13 contacts →
	Indirect 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 29, 2026
8	AOT	Indirect evidence	London, United KingdomHQ checked Sep 29, 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 29, 2026
9	Acrometis UK	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	11 contacts →
	Indirect 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 29, 2026
10	FGE	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	51-200	11 contacts →
	Indirect 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 29, 2026
11	Pveconsulting	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	7 contacts →
	Indirect 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 29, 2026
12	EPEUS	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	6 contacts →
	Partial evidence “Epeus provides niche consulting services to the Energy Industry.” Source: RevenueBase Database · checked Sep 29, 2026
13	Bedrock Drilling Limited	Indirect evidence	London, United KingdomHQ checked Sep 29, 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 29, 2026
14	Phase Design & Engineering	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	5 contacts →
	Partial evidence “Phase Design & Engineering Ltd was formed with the intention of producing credible and buildable E&P designs.” Source: RevenueBase Database · checked Sep 29, 2026
15	Channoil Energy	Indirect evidence	London, United KingdomHQ checked Sep 29, 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 29, 2026
16	Aeonx Limited	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	5 contacts →
	Partial evidence “Deploying broad technical and engineering solutions to help oil and gas companies maximise value from their assets.” Source: RevenueBase Database · checked Sep 29, 2026
17	ERCE	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	51-200	4 contacts →
	Partial evidence “As a global leader in energy consulting, ERCE is committed to supporting oil & gas, new energy types and efforts to decarbonise and reduce GHG emissions.” Source: RevenueBase Database · checked Sep 29, 2026
18	A Richards Consulting LTD ARC	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	3 contacts →
	Partial evidence “Consulting services to industry.” Source: RevenueBase Database · checked Sep 29, 2026
19	Olax Engineering Consulting	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	3 contacts →
	Partial evidence “OLAX Engineering is a company with global aspirations.” Source: RevenueBase Database · checked Sep 29, 2026
20	Rebduk	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	3 contacts →
	Indirect evidence “We are an independent oil and gas consultancy, who offers business development services for European market.” Source: RevenueBase Database · checked Sep 29, 2026
21	Opus OIL And GAS Limited	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	2 contacts →
	Indirect evidence “We are Opus Oil and Gas.” Source: RevenueBase Database · checked Sep 29, 2026
22	Oxford Well Engineering Limited London	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	2 contacts →
	Partial evidence “Oxford Well Engineering (OWE) is an independent, London-based well engineering and digital drilling optimization consultancy.” Source: RevenueBase Database · checked Sep 29, 2026
23	Strados International	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	2 contacts →
	Indirect evidence “Strados International Limited is a startup delivering world‑class subsurface professional services for the exploration, development, and management of energy resources.” Source: RevenueBase Database · checked Sep 29, 2026
24	Ini-Dim Labs	Strong evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	2 contacts →
	Strong evidence “Engineering Consulting Services” Source: RevenueBase Database · checked Sep 29, 2026
25	Millennium OIL & GAS Engineering LTD	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	2 contacts →
	Partial evidence “Millennium is an Engineering Firm that specializes in the design and execution of a wide range of Oil & Gas Projects.” Source: RevenueBase Database · checked Sep 29, 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: petroleum engineering 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 petroleum engineering consulting firms.
Partial evidence: Its own public description names part of petroleum engineering consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name petroleum engineering 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 103 petroleum engineering consulting firms based in London, United Kingdom

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Petroleum engineering consulting firms based in London, United Kingdom at a glance

As of Sep 29, 2026

39.4%Verified-email coverage

19.9Average contacts per company

1-10Median size (employees)

Sep 29, 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 across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 103 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 petroleum engineering 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 “petroleum engineering 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 petroleum engineering 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 petroleum engineering 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, 807 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 29, 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.

Petroleum engineering consulting firms by metro in the United Kingdom

Petroleum engineering consulting firms in Aberdeen94

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 petroleum engineering 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 petroleum engineering consulting firms are there based in London, United Kingdom?

RevenueBase identified 103 petroleum engineering 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?

Hobark International Limited, headquartered in London, tops this list with the largest team on record.

Which city in the United Kingdom has the most petroleum engineering consulting firms?

London leads the United Kingdom with 103 headquartered companies, followed by Aberdeen (94) and Edinburgh (12).

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 807 verified decision-maker contacts tracked across these 103 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 29, 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.