Company lists · Data refreshed September 2026

Top 25 Exploration and production accounting firms based in the United Kingdom

Name: Exploration and production accounting 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 28, 2026 92 companies tracked

RevenueBase identified 92 exploration and production accounting firms headquartered in the United Kingdom as of September 2026 and tracks 1,750 professional contacts across them, including 670 with verified work emails. London is the largest hub.

This list covers exploration and production accounting 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 28, 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 28, 2026 86% judged on-target in blind review

92Companies

1,750Contacts tracked

670Verified emails

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The 25 largest exploration and production accounting firms based in the United Kingdom

Ranked by team size

Top 25 of 92 exploration and production accounting firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to exploration and production accounting 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	Assala Energy	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	655 contacts →
	Strong evidence “Assala Energy is an oil exploration and production company.” Source: RevenueBase Database · checked Sep 28, 2026
2	Energean	Indirect evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
3	AXIS	Strong evidence	Aberdeenshire, United KingdomHQ checked Sep 28, 2026	51-200	94 contacts →
	Strong 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 28, 2026
4	Accord Energy Solutions Limited	Partial evidence	Aberdeen, United KingdomHQ checked Sep 28, 2026	11-50	36 contacts →
	Partial evidence “We are a highly experienced and fully independent hydrocarbon accounting consultancy, specialising in Measurement, Allocation and System Delivery projects for clients in the…” Source: RevenueBase Database · checked Sep 28, 2026
5	Petrovision	Indirect evidence	Fulham, United KingdomHQ checked Sep 28, 2026	11-50	20 contacts →
	Indirect 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 28, 2026
6	Oilfield Production Enhancement Consulting Services Opecs LTD	Partial evidence	Aberdeen, United KingdomHQ checked Sep 28, 2026	1-10	17 contacts →
	Partial 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 28, 2026
7	Nventures LTD	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	13 contacts →
	Partial evidence “The best way to address subsurface risk in exploration is by industry collaboration.” Source: RevenueBase Database · checked Sep 28, 2026
8	Petroxin	Indirect evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
9	Neftex Predictions	Indirect evidence	Abingdon, United KingdomHQ checked Sep 28, 2026	51-200	12 contacts →
	Indirect evidence “The Neftex® Predictions portfolio from Halliburton Landmark delivers an unparalleled global view of Earth’s tectonostratigraphic history and associated resource potential.” Source: RevenueBase Database · checked Sep 28, 2026
10	Adept Solutions	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 28, 2026	11-50	12 contacts →
	Indirect evidence “Adept Solutions is a specialist software company founded in 2006.” Source: RevenueBase Database · checked Sep 28, 2026
11	EOS Europe LTD	Partial evidence	Aberdeen, United KingdomHQ checked Sep 28, 2026	11-50	11 contacts →
	Partial 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 28, 2026
12	Falcon Global LTD	Indirect evidence	Norwich, United KingdomHQ checked Sep 28, 2026	11-50	11 contacts →
	Indirect evidence “Falcon Global serves major oil companies, engineering contractors and shipbuilders as consultants and contractors.” Source: RevenueBase Database · checked Sep 28, 2026
13	Nobel Upstream	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	10 contacts →
	Strong evidence “Nobel Upstream is a privately held independent exploration and production company engaged in oil and natural gas projects.” Source: RevenueBase Database · checked Sep 28, 2026
14	Elite Energy Consultants	Indirect evidence	Edinburgh, United KingdomHQ checked Sep 28, 2026	11-50	7 contacts →
	Indirect evidence “If there is one thing you can count on in business, it’s change.” Source: RevenueBase Database · checked Sep 28, 2026
15	Pveconsulting	Partial evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
16	Phase Design & Engineering	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	5 contacts →
	Indirect evidence “Phase Design & Engineering Ltd was formed with the intention of producing credible and buildable E&P designs.” Source: RevenueBase Database · checked Sep 28, 2026
17	North SEA Natural Resources LTD	Strong evidence	Dorking, United KingdomHQ checked Sep 28, 2026	1-10	5 contacts →
	Strong evidence “Start up Oil Exploration, Appraisal and Production company” Source: RevenueBase Database · checked Sep 28, 2026
18	Black CAT Energy Services	Indirect evidence	Witham, United KingdomHQ checked Sep 28, 2026	1-10	5 contacts →
	Indirect evidence “We provide commercial consulting services to the upstream oil and gas industry.” Source: RevenueBase Database · checked Sep 28, 2026
19	Barnwell Parker Geoscience LTD	Indirect evidence	Conway, United KingdomHQ checked Sep 28, 2026	1-10	2 contacts →
	Indirect evidence “Geological & Geophysical consultancy to the Oil and Gas Industry” Source: RevenueBase Database · checked Sep 28, 2026
20	Pangaea IRS Limited	Indirect evidence	Abingdon, United KingdomHQ checked Sep 28, 2026	1-10	2 contacts →
	Indirect evidence “Pangaea Integrated Reservoir Solutions Limited is an independent consultancy firm offering technical advice related to geology and geophysics to the petroleum sector.” Source: RevenueBase Database · checked Sep 28, 2026
21	Oilfield International	Indirect evidence	Hayling Island, United KingdomHQ checked Sep 28, 2026	1-10	1 contacts →
	Indirect evidence “Established in 1990, Oilfield International provides technical, valuation, acquisition and contracts services to oil companies, to companies entering the oil industry by…” Source: RevenueBase Database · checked Sep 28, 2026
22	Petroleum Geology Consulting Limited	Partial evidence	Walton-on-thames, United KingdomHQ checked Sep 28, 2026	1-10	1 contacts →
	Partial evidence “Petroleum Geology Consulting Limited was founded to provide a source of reservoir, development, and production geology expertise for operators, co-venturers, and investor groups…” Source: RevenueBase Database · checked Sep 28, 2026
23	Borchwix Energy Advisors LTD	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	1 contacts →
	Indirect evidence “Carsten and Jon are ex Senergy / LR Senergy / Lloyd’s Register commercial and subsurface consultants and now founding partners of BorchWix Energy Advisors Limited (“BWEA”).” Source: RevenueBase Database · checked Sep 28, 2026
24	Athena Exploration Limited	Partial evidence	Aberdeen, United KingdomHQ checked Sep 28, 2026	1-10	1 contacts →
	Partial evidence “ATHENA EXPLORATION LIMITED is an oil & gas company based out of 1 St Devenick's Place, Cults, Aberdeen AB15 9LN, United Kingdom.” Source: RevenueBase Database · checked Sep 28, 2026
25	Clifton Financial Solutions Limited	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	1 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 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: exploration and production accounting 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 exploration and production accounting firms.
Partial evidence: Its own public description names part of exploration and production accounting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name exploration and production accounting 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 92 exploration and production accounting firms based in the United Kingdom

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Exploration and production accounting firms based in the United Kingdom at a glance

As of Sep 28, 2026

38.3%Verified-email coverage

19.0Average contacts per company

1-10Median size (employees)

34.8%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 92 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 exploration and production accounting 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 “exploration and production accounting 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 exploration and production accounting 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 exploration and production accounting 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, 670 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 28, 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.

Exploration and production accounting firms by metro

Exploration and production accounting firms in London32

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 exploration and production accounting 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 exploration and production accounting firms are there based in the United Kingdom?

RevenueBase identified 92 exploration and production accounting 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?

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

Which city has the most exploration and production accounting firms?

London leads with 32 headquartered companies, followed by Aberdeen (14) and Camberley (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 670 verified decision-maker contacts tracked across these 92 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 28, 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.