Company lists · Data refreshed September 2026

Top 25 Reservoir engineering consultants based in the United Kingdom

Name: Reservoir engineering consultants 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 241 companies tracked

RevenueBase identified 241 reservoir engineering consultants headquartered in the United Kingdom as of September 2026 and tracks 3,500 professional contacts across them, including 1,286 with verified work emails. London is the largest hub.

This list covers reservoir engineering consultants 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

241Companies

3,500Contacts tracked

1,286Verified emails

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The 25 largest reservoir engineering consultants based in the United Kingdom

Ranked by team size

Top 25 of 241 reservoir engineering consultants 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 reservoir engineering consultants: 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	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
2	KBR Granherne	Strong evidence	Leatherhead, United KingdomHQ checked Sep 17, 2026	501-1,000	648 contacts →
	Strong 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
3	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
4	AXIS	Partial evidence	Aberdeenshire, United KingdomHQ checked Sep 17, 2026	51-200	94 contacts →
	Partial 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
5	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
6	OPC	Partial evidence	London, United KingdomHQ checked Sep 17, 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 17, 2026
7	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
8	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
9	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
10	OIL Plus LTD	Partial evidence	Newbury, United KingdomHQ checked Sep 17, 2026	11-50	36 contacts →
	Partial 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
11	AFAA	Indirect evidence	Nottingham, United KingdomHQ checked Sep 17, 2026	11-50	35 contacts →
	Indirect evidence “We help energy companies keep critical pipeline infrastructure safe, compliant, and ready for the energy transition.” Source: RevenueBase Database · checked Sep 17, 2026
12	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
13	QEM Solutions	Indirect evidence	Moffat, United KingdomHQ checked Sep 17, 2026	11-50	30 contacts →
	Indirect evidence “We are QEM Solutions.” Source: RevenueBase Database · checked Sep 17, 2026
14	Hydraulic Analysis Group Limited	Strong evidence	Leeds, United KingdomHQ checked Sep 17, 2026	51-200	30 contacts →
	Strong evidence “Hydraulic Analysis Limited is the acknowledged worldwide leading engineering consultancy for undertaking pipeline hydraulic design and surge analysis studies.” Source: RevenueBase Database · checked Sep 17, 2026
15	Metron Group Limited	Partial evidence	Inverurie, United KingdomHQ checked Sep 17, 2026	11-50	29 contacts →
	Partial evidence “Metron Group Limited is an independent Engineering Service Company dedicated to improving platform reliability and hence overall production efficiency, in the Energy & Oil & Gas…” Source: RevenueBase Database · checked Sep 17, 2026
16	Gaffneycline	Indirect evidence	Farnham, United KingdomHQ checked Sep 17, 2026	51-200	29 contacts →
	Indirect evidence “GaffneyCline provides integrated technical and commercial consulting and independent advice on oil, gas and carbon management.” Source: RevenueBase Database · checked Sep 17, 2026
17	Petrovision	Partial evidence	Fulham, United KingdomHQ checked Sep 17, 2026	11-50	20 contacts →
	Partial evidence “PetroVision's workforce is comprised of highly qualified professionals, the principal staff have on average 20 years of industry experience in the areas of Geoscience, Engineering…” Source: RevenueBase Database · checked Sep 17, 2026
18	Elixir Consultant UK	Partial evidence	Aberdeen, United KingdomHQ checked Sep 17, 2026	51-200	19 contacts →
	Partial evidence “ELIXIR Consultants provide market leading state-of-the art consultancy support to the oil and gas and Petrochemical industries across all lifecycle stages – from appraise through…” Source: RevenueBase Database · checked Sep 17, 2026
19	Astrimar LTD	Strong evidence	Inverurie, United KingdomHQ checked Sep 17, 2026	11-50	18 contacts →
	Strong evidence “Astrimar is an independent specialist engineering consultancy delivering excellence in:* Reliability, Integrity & Technical Risk Management * Technology Qualification * Innovative…” Source: RevenueBase Database · checked Sep 17, 2026
20	Performance Energy LTD	Indirect evidence	Southampton, United KingdomHQ checked Sep 17, 2026	1-10	18 contacts →
	Indirect evidence “About: Who is Performance Energy?” Source: RevenueBase Database · checked Sep 17, 2026
21	4pmc	Indirect evidence	Walton On The Hill, United KingdomHQ checked Sep 17, 2026	201-500	18 contacts →
	Indirect evidence “4PMC is an expanding company.” Source: RevenueBase Database · checked Sep 17, 2026
22	Oilfield Production Enhancement Consulting Services Opecs LTD	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 17, 2026	1-10	17 contacts →
	Indirect evidence “Oilfield Production Enhancement Consulting Services (OPECS) LTD is an experienced and dynamic company based in Aberdeen UK which aims to provide best in class technical…” Source: RevenueBase Database · checked Sep 17, 2026
23	Islay Subsurface & Engineering LTD	Partial evidence	London, United KingdomHQ checked Sep 17, 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 17, 2026
24	Stillwater Associates LTD	Strong evidence	Reigate, United KingdomHQ checked Sep 17, 2026	11-50	16 contacts →
	Strong evidence “Stillwater Associates is dedicated to reservoir safety and water engineering services.” Source: RevenueBase Database · checked Sep 17, 2026
25	Codex Integrity Limited	Indirect evidence	Chester, United KingdomHQ checked Sep 17, 2026	11-50	16 contacts →
	Indirect evidence “Codex Integrity are able to offer the highest levels of technical support.” 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: reservoir engineering consultants. 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 reservoir engineering consultants.
Partial evidence: Its own public description names part of reservoir engineering consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name reservoir engineering consultants. 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 241 reservoir engineering consultants based in the United Kingdom

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Reservoir engineering consultants based in the United Kingdom at a glance

As of Sep 17, 2026

36.7%Verified-email coverage

14.5Average contacts per company

1-10Median size (employees)

23.7%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

159

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 241 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 reservoir engineering consultants, 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 “reservoir engineering consultants”. 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 reservoir engineering consultants), 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 reservoir engineering consultants, 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, 1,286 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.

Reservoir engineering consultants by metro

Reservoir engineering consultants in London57
Reservoir engineering consultants in Aberdeen48

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 reservoir engineering consultants, 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 reservoir engineering consultants are there based in the United Kingdom?

RevenueBase identified 241 reservoir engineering consultants 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?

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

Which city has the most reservoir engineering consultants?

London leads with 57 headquartered companies, followed by Aberdeen (48) and Edinburgh (8).

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 1,286 verified decision-maker contacts tracked across these 241 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.