Company lists · Data refreshed September 2026
Top 25 Oil and gas accounting firms based in the United Kingdom
RevenueBase identified 378 oil and gas accounting firms headquartered in the United Kingdom as of September 2026 and tracks 2,020 professional contacts across them, including 642 with verified work emails and 105 with mobile numbers. London is the largest hub.
This list covers oil and gas 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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.
The 25 largest oil and gas accounting firms based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 505 | ||||
Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | 36 | ||||
“We are a highly experienced and fully independent hydrocarbon accounting consultancy, specialising in Measurement, Allocation and System Delivery projects for clients in the…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | GaffneyclineStrong evidence | 29 | |||
“GaffneyCline provides integrated technical and commercial consulting and independent advice on oil, gas and carbon management.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | 23 | ||||
“Hicks and Company, Chartered Accountants Tax and Audit Specialists We are a local firm of accountants based in Harpenden, Hemel Hempstead and Hitchin” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | PetrovisionIndirect evidence | 20 | |||
“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: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | 19 | ||||
“A consistently progressive approach to client service keeps the Beatons Group at the forefront of local and national business.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | 19 | ||||
“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: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | GoldblattsPartial evidence | 18 | |||
“The provision of accounting, auditing, taxation services and business advice to a number of clients ranging from individuals to small, medium and large groups of privately owned…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | Verif-IIndirect evidence | 18 | |||
“Verif-i is a leading Integrated Seismic Survey Management company offering high-quality independent consultancy, project management and QC services aiding our clients to achieve…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | Oilfield Production Enhancement Consulting Services Opecs LTDIndirect evidence | 17 | |||
“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: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | 15 | ||||
“Accountants Registered Auditors Chartered Tax Advisers Business Advisers” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | 13 | ||||
“Parker Russell is a leading audit firm offering comprehensive services to medium to large corporations, specialising in FCA-regulated environments and stock exchange-listed…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | 13 | ||||
“OCTA Accountants is one of the emerging accounting and consulting firms across the globe.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | Adept SolutionsIndirect evidence | 12 | |||
“Adept Solutions is a specialist software company founded in 2006.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | Rockflow ResourcesIndirect evidence | 12 | |||
“Expert Upstream Advisors.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | 11 | ||||
“LANCASTER HASKINS LIMITED is an accounting company based out of GRANVILLE HOUSE 2 TETTENHALL ROAD, WOLVERHAMPTON, United Kingdom.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | 11 | ||||
“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: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | 11 | ||||
Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | 11 | ||||
“Falcon Global serves major oil companies, engineering contractors and shipbuilders as consultants and contractors.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | 10 | ||||
“Newton Magnus Ltd is an Accounting company located in 10 Station Approach, Broadstone, United Kingdom.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | 10 | ||||
“NABAILE YOUNG UK LTD is an accounting company based out of 334 SLADE LANE, MANCHESTER, United Kingdom.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | 8 | ||||
“CHARTWELLS ACCOUNTANTS LIMITED is an accounting company based out of 1 ST JOSEPHS COURT TRINDLE ROAD, DUDLEY, United Kingdom.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | 8 | ||||
“Business Advisors, Chartered Accountants, Tax Consultants, Forensic Accountants and Registered Auditors.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 24 | 8 | ||||
“We are an energy company based in Aberdeen, Scotland.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 25 | 8 | ||||
“AK Well Services Limited provides specialist advice and support to independent oil companies on all aspects of Drilling & Completion Fluids engineering, including associated areas…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 378 oil and gas accounting firms based in the United Kingdom
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Oil and gas accounting firms based in the United Kingdom at a glance
As of Sep 5, 2026Companies by employee count
Verified emails by last verification
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 accounting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 “oil and gas accounting firms”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among oil and gas 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 an evidence 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, 642 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 5, 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 accounting firms by metro
- Oil and gas accounting firms in London62
Frequently asked
How many oil and gas accounting firms are there based in the United Kingdom?
RevenueBase identified 378 oil and gas 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?
Mazars In The UK, headquartered in London, tops this list with the largest team on record.
Which city has the most oil and gas accounting firms?
London leads with 62 headquartered companies, followed by Aberdeen (14) and Birmingham (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 642 verified decision-maker contacts tracked across these 378 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 5, 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 SmartSearch, 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.
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