Company lists · Data refreshed September 2026

Top 25 Petroleum engineering firms based in the United Kingdom

Name: Petroleum engineering firms based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 386 companies tracked

RevenueBase identified 386 petroleum engineering firms headquartered in the United Kingdom as of September 2026 and tracks 22,358 professional contacts across them, including 2,515 with verified work emails. London is the largest hub.

This list covers petroleum engineering firms 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 17, 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 17, 2026 86% judged on-target in blind review

386Companies

22,358Contacts tracked

2,515Verified emails

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The 25 largest petroleum engineering firms based in the United Kingdom

Ranked by team size

Top 25 of 386 petroleum engineering firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to petroleum engineering 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	Amec Foster Wheeler	Partial evidence	Aberdeen, United KingdomHQ checked Sep 17, 2026	10001+	14,368 contacts →
	Partial evidence “Wood Group has combined with Amec Foster Wheeler to form a new global leader in the delivery of project, engineering and technical services to energy and industrial markets.” Source: RevenueBase Database · checked Sep 17, 2026
2	Excellence Logging	Indirect evidence	London W2 2es, United KingdomHQ checked Sep 17, 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 17, 2026
3	KBR Granherne	Partial evidence	Leatherhead, United KingdomHQ checked Sep 17, 2026	501-1,000	648 contacts →
	Partial evidence “KBR Consulting is one of the world's foremost engineering consultancies specializing in the hydrocarbon and energy industry.” Source: RevenueBase Database · checked Sep 17, 2026
4	Claxton Engineering Services	Indirect evidence	Great Yarmouth, United KingdomHQ checked Sep 17, 2026	201-500	279 contacts →
	Indirect evidence “Claxton, an AF Gruppen Company, combines decades of industry experience, proprietary technology, and exceptional service quality to cut through offshore installation and…” Source: RevenueBase Database · checked Sep 17, 2026
5	Hobark International Limited	Indirect evidence	London, United KingdomHQ checked Sep 17, 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 17, 2026
6	Derrick Services UK LTD	Indirect evidence	Great Yarmouth, United KingdomHQ checked Sep 17, 2026	51-200	111 contacts →
	Indirect 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 17, 2026
7	CTS Offshore & Marine	Partial evidence	London, United KingdomHQ checked Sep 17, 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 17, 2026
8	Petrex Energy Services Limited	Partial evidence	Aberdeen, United KingdomHQ checked Sep 17, 2026	11-50	99 contacts →
	Partial evidence “Innovative Engineering Excellence for the energy sector through our engineering design & field development divisions.” Source: RevenueBase Database · checked Sep 17, 2026
9	AXIS	Indirect evidence	Aberdeenshire, United KingdomHQ checked Sep 17, 2026	51-200	94 contacts →
	Indirect evidence “Based in Aberdeen, Axis is an independent consultancy providing specialist Exploration and Production, Decommissioning and Low Carbon expertise to the global energy industry and…” Source: RevenueBase Database · checked Sep 17, 2026
10	Elemental Energies	Partial evidence	Aberdeen, United KingdomHQ checked Sep 17, 2026	201-500	89 contacts →
	Partial evidence “Elemental Energies is a global engineering and project management business with a track record spanning more than 35 years.” Source: RevenueBase Database · checked Sep 17, 2026
11	TDC Aberdeen	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 17, 2026	201-500	74 contacts →
	Indirect evidence “At TDC we focus on two fundamental areas of business; our customers and our people.” Source: RevenueBase Database · checked Sep 17, 2026
12	HRH Geology	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 17, 2026	51-200	73 contacts →
	Indirect evidence “HRH Geology is the Oil and Gas Industry's leading provider of Operational Geology solutions.” Source: RevenueBase Database · checked Sep 17, 2026
13	PDI LTD	Partial evidence	Aberdeen, United KingdomHQ checked Sep 17, 2026	51-200	72 contacts →
	Partial evidence “Project Development International Limited (PDi) is a highly skilled and experienced consultancy providing project management and discipline engineering solutions to the global…” Source: RevenueBase Database · checked Sep 17, 2026
14	RDS	Partial evidence	Aberdeen, United KingdomHQ checked Sep 17, 2026	1,001-5,000	70 contacts →
	Partial evidence “RDS is an engineering specialist working for oil and gas companies and major topsides and drilling contractors.” Source: RevenueBase Database · checked Sep 17, 2026
15	Omnia Projects	Partial evidence	Northallerton, United KingdomHQ checked Sep 17, 2026	51-200	68 contacts →
	Partial evidence “Omnia Projects are an Engineering Consultancy providing multidisciplinary expertise for energy projects providing a complete service from feasibility and concept development…” Source: RevenueBase Database · checked Sep 17, 2026
16	OPC	Indirect evidence	London, United KingdomHQ checked Sep 17, 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 17, 2026
17	Mobility OIL & GAS Limited	Strong evidence	London, United KingdomHQ checked Sep 17, 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 17, 2026
18	Zenith Energy LTD	Partial evidence	Aberdeen, United KingdomHQ checked Sep 17, 2026	11-50	45 contacts →
	Partial evidence “Zenith Energy Limited is a Well Engineering Consultancy and Project Management company providing a range of specialist services to the Oil and Gas Industry.” Source: RevenueBase Database · checked Sep 17, 2026
19	Geologix	Partial evidence	Norwich, United KingdomHQ checked Sep 17, 2026	11-50	41 contacts →
	Partial evidence “Geologix has been a leading technology and engineering application development company since 1994, focused on providing innovative and reliable solutions for well monitoring…” Source: RevenueBase Database · checked Sep 17, 2026
20	OSL Consulting Engineers	Indirect evidence	Hull, United KingdomHQ checked Sep 17, 2026	51-200	41 contacts →
	Indirect evidence “OSL is a multi-disciplined team of creative, forward thinking technical specialists, working collaboratively with the energy and related sectors to provide quality implemented…” Source: RevenueBase Database · checked Sep 17, 2026
21	Rigquip	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 17, 2026	51-200	37 contacts →
	Indirect evidence “At RigQuip, we’re not just drilling equipment experts-we’re your strategic partner in energy asset performance.” Source: RevenueBase Database · checked Sep 17, 2026
22	Gorevega	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 17, 2026	51-200	37 contacts →
	Indirect 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 17, 2026
23	Costain Upstream LTD	Partial evidence	Aberdeen, United KingdomHQ checked Sep 17, 2026	201-500	37 contacts →
	Partial evidence “We provide innovative engineering and technology-led solutions to meet the needs of our customers.” Source: RevenueBase Database · checked Sep 17, 2026
24	OIL Plus LTD	Indirect evidence	Newbury, United KingdomHQ checked Sep 17, 2026	11-50	36 contacts →
	Indirect evidence “As a world-leading independent consultancy in oil and gas field water management, our team provides on-site fluid sampling, laboratory analysis, specialty monitoring equipment for…” Source: RevenueBase Database · checked Sep 17, 2026
25	Consub	Partial evidence	Surbiton, United KingdomHQ checked Sep 17, 2026	11-50	32 contacts →
	Partial evidence “CONSUB is an independent engineering and project management services provider to the global energy industry.” Source: RevenueBase Database · checked Sep 17, 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 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 firms.
Partial evidence: Its own public description names part of petroleum engineering 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 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 386 petroleum engineering firms based in the United Kingdom

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Petroleum engineering firms based in the United Kingdom at a glance

As of Sep 17, 2026

11.2%Verified-email coverage

57.9Average contacts per company

1-10Median size (employees)

20.5%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

256

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 386 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 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 the United Kingdom whose own description of what they do matches “petroleum engineering 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 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 firms, 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, 2,515 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 17, 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 firms by metro

Petroleum engineering firms in London79
Petroleum engineering firms in Aberdeen77

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 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 firms are there based in the United Kingdom?

RevenueBase identified 386 petroleum engineering firms 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?

Amec Foster Wheeler, headquartered in Aberdeen, tops this list with the largest team on record.

Which city has the most petroleum engineering firms?

London leads with 79 headquartered companies, followed by Aberdeen (77) and Edinburgh (5).

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 2,515 verified decision-maker contacts tracked across these 386 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 17, 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.