Company lists · Data refreshed September 2026

Top 25 Business tax consultants based in London, United Kingdom

Name: Business tax consultants based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 409 companies tracked

RevenueBase identified 409 business tax consultants headquartered in London, United Kingdom as of September 2026 and tracks 2,509 professional contacts across them, including 813 with verified work emails. London is the largest hub.

This list covers business tax consultants headquartered in London, 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 19, 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 19, 2026 86% judged on-target in blind review

409Companies

2,509Contacts tracked

813Verified emails

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The 25 largest business tax consultants based in London, United Kingdom

Ranked by team size

Top 25 of 409 business tax consultants based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to business tax 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	EY Private Client Services	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	10001+	177 contacts →
	Partial evidence “Thoughtfully structuring and managing your tax affairs is more important than ever.” Source: RevenueBase Database · checked Sep 19, 2026
2	Accounts And Legal	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	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 19, 2026
3	AOG	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	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 19, 2026
4	The FRY Group	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	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 19, 2026
5	Ustaxfs	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	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 19, 2026
6	TAX Advisory Partnership	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	51 contacts →
	Partial evidence “The Tax Advisory Partnership is a young and vibrant London-based organisation, which brings together a wealth of wide ranging experience and expertise in all areas of UK and US…” Source: RevenueBase Database · checked Sep 19, 2026
7	Lawrence Grant LLP	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	51 contacts →
	Indirect evidence “We’ve been around for a while now, celebrating our 50th anniversary in 2020.” Source: RevenueBase Database · checked Sep 19, 2026
8	Adroit Accountax LTD	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	51 contacts →
	Indirect evidence “Empowering Businesses to Thrive Through Financial Clarity \| Adroit Accountax We're a team of passionate and experienced accountants dedicated to your business success.” Source: RevenueBase Database · checked Sep 19, 2026
9	PSB Accountants Limited	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	42 contacts →
	Indirect evidence “At PSB Accountants, we put your goals and aspirations first.” Source: RevenueBase Database · checked Sep 19, 2026
10	TBA Global	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	37 contacts →
	Partial evidence “TBA Global (also known as TB Accountants) is your trusted partner for accounting and tax solutions!” Source: RevenueBase Database · checked Sep 19, 2026
11	Everfair TAX	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	31 contacts →
	Partial evidence “As specialists in UK, US and Expatriate Tax, we provide unique tax advisory and compliance services that assist both individuals and companies.” Source: RevenueBase Database · checked Sep 19, 2026
12	Haggards Crowther Chartered Accountants	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	29 contacts →
	Partial evidence “Haggards Crowther is a firm of Chartered Accountants and Tax Advisers established in the Fulham since 2004.” Source: RevenueBase Database · checked Sep 19, 2026
13	Tax&advise	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	29 contacts →
	Partial evidence “We are accountants and business consultants who speak the language of our clients.” Source: RevenueBase Database · checked Sep 19, 2026
14	Lanop Business & TAX Advisors	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	28 contacts →
	Partial evidence “Lanop Business & Tax Advisors, headquartered in South West London, is dedicated to delivering a full spectrum of accounting and tax services tailored to the unique needs of each…” Source: RevenueBase Database · checked Sep 19, 2026
15	WTT	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	28 contacts →
	Partial evidence “WTT provides experienced tax advisers, legal experts and finance professionals.” Source: RevenueBase Database · checked Sep 19, 2026
16	Ibiss & CO Limited	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	26 contacts →
	Strong evidence “not all accountants are tax specialists and not all tax consultants are accountants" At IBISS & CO we appreciate the value of working together as a team.” Source: RevenueBase Database · checked Sep 19, 2026
17	Wisteria Limited	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	25 contacts →
	Partial evidence “Wisteria is an independent firm of Chartered Tax Advisers, Accountants and Auditors based in North West London.” Source: RevenueBase Database · checked Sep 19, 2026
18	Fspg Chartered Accountants	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	501-1,000	25 contacts →
	Indirect evidence “FSPG merged with BKL in April 2022.” Source: RevenueBase Database · checked Sep 19, 2026
19	Q Accountants	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	24 contacts →
	Indirect evidence “Every SME faces many challenges to overcome.” Source: RevenueBase Database · checked Sep 19, 2026
20	Demsa Accountants	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	18 contacts →
	Strong evidence “As Demsa, we offer comprehensive, innovative, profit-driven accounting, tax, and consultancy services to businesses and taxpayers in the United Kingdom in three different…” Source: RevenueBase Database · checked Sep 19, 2026
21	K3 Advantage	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	18 contacts →
	Partial evidence “K3 Advantage is a trusted advisor focusing on Transactions, Tax Advisory and Strategy.” Source: RevenueBase Database · checked Sep 19, 2026
22	Boobooks	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	17 contacts →
	Partial evidence “Boobooks offers expert accounting, tax, and business support services tailored for small businesses.” Source: RevenueBase Database · checked Sep 19, 2026
23	K3 TAX Advisory Limited	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	16 contacts →
	Partial evidence “K3 Tax Advisory offers strategic tax advisory and planning services to clients undertaking complex transactions and restructuring in order to mitigate tax risk and maximise value.” Source: RevenueBase Database · checked Sep 19, 2026
24	KEY Business Consultants LLP	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	16 contacts →
	Strong evidence “Seed EIS Tax Relief Specialists, Chartered Accountants for all business and personal matters Small Business Tax Accountant, Chartered Accountants & Business Consultant Services…” Source: RevenueBase Database · checked Sep 19, 2026
25	DAS TAX And Advisory Group US And UK	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	16 contacts →
	Indirect evidence “A thriving business is always seeking to grow.” Source: RevenueBase Database · checked Sep 19, 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: business tax 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 business tax consultants.
Partial evidence: Its own public description names part of business tax consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name business tax 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 409 business tax consultants based in London, United Kingdom

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Business tax consultants based in London, United Kingdom at a glance

As of Sep 19, 2026

32.4%Verified-email coverage

6.1Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

277

11-50

114

51-200

501-1,000

10001+

Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 409 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 business tax 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 London, United Kingdom whose own description of what they do matches “business tax 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 business tax 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 business tax consultants, and records with no verified work email. Companies headquartered outside London 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, 813 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 19, 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.

Business tax consultants by metro in the United Kingdom

Business tax consultants in London409
Business tax consultants in Manchester41
Business tax consultants in Birmingham39

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 business tax 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 business tax consultants are there based in London, United Kingdom?

RevenueBase identified 409 business tax consultants headquartered in London, 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?

EY Private Client Services, headquartered in London, tops this list with the largest team on record.

Which city has the most business tax consultants?

London leads with 409 headquartered companies, followed by Manchester (41) and Birmingham (39).

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 813 verified decision-maker contacts tracked across these 409 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 19, 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.