Company lists · Data refreshed September 2026
Top 25 Tax advisory firms based in the United Kingdom
RevenueBase identified 1,936 tax advisory firms headquartered in the United Kingdom as of September 2026 and tracks 19,733 professional contacts across them, including 8,538 with verified work emails. London is the largest hub.
This list covers tax advisory 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 22, 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.
The 25 largest tax advisory firms based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,042 contacts → | ||||
Indirect evidence “A traditional general practice, with a twist.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,151 contacts → | ||||
Indirect evidence “At Moore Kingston Smith, we believe in the potential of people to make a positive impact, fuelled by the power of genuine understanding.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,125 contacts → | ||||
Indirect evidence “We provide services that help businesses at every stage of the lifecycle.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 4 | 701 contacts → | ||||
Strong evidence “Blick Rothenberg is a leading tax, accounting and business advisory firm founded on personal integrity and technical expertise.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 5 | 655 contacts → | ||||
Strong evidence “HaysMac is an award‑winning accountancy, tax and advisory firm, known for delivering expert, partner‑led advice to ambitious organisations and individuals.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 6 | 575 contacts → | ||||
Partial evidence “Buzzacott is an accountancy and advisory firm with a long-standing history of supporting individuals, businesses, and not-for-profits.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 7 | 203 contacts → | ||||
Strong evidence “Lubbock Fine is an independent accounting, tax, audit and advisory firm in the City of London.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 8 | 185 contacts → | ||||
Partial evidence “Sopher + Co is one of the most entrepreneurial and progressive firms of accountants, business advisers, tax and corporate finance consultants in London.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 9 | 177 contacts → | ||||
Partial evidence “Thoughtfully structuring and managing your tax affairs is more important than ever.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 10 | 171 contacts → | ||||
Strong evidence “We are a firm of dedicated Accountants, Business Advisors & Tax Specialists, fully committed to enhancing and protecting our clients’ financial position.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 11 | 153 contacts → | ||||
Indirect evidence “Dixon Wilson is one of the leading firms of Chartered Accountants based in London.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 12 | 151 contacts → | ||||
Partial evidence “For 40 years, Ormerod Rutter have offered the specialist hands-on support that clients need to handle all of their tax, business and financial affairs.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 13 | 143 contacts → | ||||
Partial evidence “Ballards LLP is an integrated advisory firm with offices in Birmingham, Worcester, and Droitwich, helping businesses and private client make faster, better-informed decisions.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 14 | 134 contacts → | ||||
Strong evidence “Award winning accountants & tax advisors based in Newport, South Wales.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 15 | 133 contacts → | ||||
Indirect evidence “Traditional accountants do a great job of the numbers, but that's often as far as the service goes.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 16 | 114 contacts → | ||||
Indirect evidence “Whitings LLP are a firm of general practice chartered accountants, the partners of which are predominantly members of the Institute of Chartered Accountants in England and Wales.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 17 | 114 contacts → | ||||
Indirect evidence “Alliotts LLP is based in London and Guildford.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 18 | 101 contacts → | ||||
Strong evidence “Kirk Rice is a leading independent firm of accountants, tax advisors and financial advisors.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 19 | 101 contacts → | ||||
Partial evidence “Welcome to AOG, your esteemed accounting and tax partner, serving SMEs and high-net-worth individuals in the UK and abroad.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 20 | 87 contacts → | ||||
Partial evidence “Redefining expectations in tax We are a full-service specialist tax firm, home to the brightest minds in tax, maximising value and growth for clients through tailored solutions.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 21 | 87 contacts → | ||||
Partial evidence “Haslers are an award winning tax consultants, business advisers and Chartered Accountants in Essex, who, for over 70 years have been providing a comprehensive service to…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 22 | 85 contacts → | ||||
Partial evidence “We are a team of helpful tax and financial planning experts, here to listen, understand your needs and circumstances and make all aspects of dealing with your finances simple…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 23 | 83 contacts → | ||||
Partial evidence “Stephenson Smart is a firm of Chartered Accountants and Business Advisors based in Norfolk and Cambridgeshire.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 24 | 77 contacts → | ||||
Indirect evidence “Your Innovation, Our Expertise.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 25 | 75 contacts → | ||||
Partial evidence “USTAXFS are the largest independent tax accounting firm in the UK & Europe specialising in US tax, including the complex specialism of US and UK cross-border tax planning.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
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: tax advisory 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 tax advisory firms.
- Partial evidence
- Its own public description names part of tax advisory firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name tax advisory 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 1,936 tax advisory firms based in the United Kingdom
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Tax advisory firms based in the United Kingdom at a glance
As of Sep 22, 2026Companies by employee count
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 1,936 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 tax advisory 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 “tax advisory 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 tax advisory 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 tax advisory 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, 8,538 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 22, 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.
Tax advisory firms by metro
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 tax advisory 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 tax advisory firms are there based in the United Kingdom?
RevenueBase identified 1,936 tax advisory 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?
TAX Consultant, headquartered in Brighton, tops this list with the largest team on record.
Which city has the most tax advisory firms?
London leads with 486 headquartered companies, followed by Birmingham (47) and Manchester (42).
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 8,538 verified decision-maker contacts tracked across these 1,936 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 22, 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.
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