Company lists · Data refreshed September 2026

Top 25 Fiduciary tax preparation firms based in the United Kingdom

Name: Fiduciary tax preparation 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 20, 2026 457 companies tracked

RevenueBase identified 457 fiduciary tax preparation firms headquartered in the United Kingdom as of September 2026 and tracks 2,483 professional contacts across them, including 800 with verified work emails. London is the largest hub.

This list covers fiduciary tax preparation 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 20, 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 20, 2026 86% judged on-target in blind review

457Companies

2,483Contacts tracked

800Verified emails

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The 25 largest fiduciary tax preparation firms based in the United Kingdom

Ranked by team size

Top 25 of 457 fiduciary tax preparation firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to fiduciary tax preparation 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	EY Private Client Services	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	10001+	177 contacts →
	Partial evidence “Thoughtfully structuring and managing your tax affairs is more important than ever.” Source: RevenueBase Database · checked Sep 20, 2026
2	Acuity Professional Group	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	51-200	138 contacts →
	Indirect evidence “We are a financial Professional Services firm, committed to giving you a simple and straightforward experience and ensuring you get the sophisticated financial outcomes you want.” Source: RevenueBase Database · checked Sep 20, 2026
3	AOG	Partial evidence	London, United KingdomHQ checked Sep 20, 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 20, 2026
4	The FRY Group	Partial evidence	London, United KingdomHQ checked Sep 20, 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 20, 2026
5	Countrywide TAX & Trust Corporation LTD	Partial evidence	Warwickshire, United KingdomHQ checked Sep 20, 2026	51-200	71 contacts →
	Partial evidence “Countrywide Tax & Trust Corporation Ltd provide a full range of private client and tax planning services, and the software packages to enable you to offer these services to your…” Source: RevenueBase Database · checked Sep 20, 2026
6	DSL Accounting	Indirect evidence	Leamington Spa, United KingdomHQ checked Sep 20, 2026	n/a	54 contacts →
	Indirect evidence “DSL is one of the UK's leading small business accountancy firms, helping businesses grow since 1997.” Source: RevenueBase Database · checked Sep 20, 2026
7	Ward Goodman LTD	Partial evidence	Ferndown Industrial Estate, United KingdomHQ checked Sep 20, 2026	51-200	46 contacts →
	Partial evidence “Ward Goodman is a leading firm of Financial Planners, Wealth Managers, Accountants, and Tax Advisers in the South of England, offering integrated and holistic services to help…” Source: RevenueBase Database · checked Sep 20, 2026
8	PSB Accountants Limited	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	11-50	42 contacts →
	Indirect evidence “At PSB Accountants, we put your goals and aspirations first.” Source: RevenueBase Database · checked Sep 20, 2026
9	Jones & CO	Partial evidence	Farnborough, United KingdomHQ checked Sep 20, 2026	n/a	42 contacts →
	Partial evidence “Based in Farnborough on the Surrey/Hants border, we are a professional firm providing a tailored personal service in accounting, tax, and general commercial matters for a wide…” Source: RevenueBase Database · checked Sep 20, 2026
10	Botham Accounting	Partial evidence	Nottingham, United KingdomHQ checked Sep 20, 2026	11-50	31 contacts →
	Partial evidence “Botham Accounting are a forward thinking team of accountants that provide strategic accounting and tax advice to ambitious businesses.” Source: RevenueBase Database · checked Sep 20, 2026
11	Humboldt Financial	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	11-50	26 contacts →
	Indirect evidence “Humboldt Financial is a financial planning firm located in London, United Kingdom.” Source: RevenueBase Database · checked Sep 20, 2026
12	Robertson Craig	Partial evidence	Glasgow, United KingdomHQ checked Sep 20, 2026	11-50	21 contacts →
	Partial evidence “Robertson Craig is an independent firm of Chartered Accountants and Chartered Tax Advisers, based in Glasgow.” Source: RevenueBase Database · checked Sep 20, 2026
13	Amber Business Solutions London LTD	Partial evidence	Ruislip, United KingdomHQ checked Sep 20, 2026	11-50	21 contacts →
	Partial evidence “At Amber Solutions, we make it easy for our clients to complete, manage and file corporate and individual tax returns, small to medium and enterprise level documents and much more.” Source: RevenueBase Database · checked Sep 20, 2026
14	Spencer Gardner Dickins	Partial evidence	Coventry, United KingdomHQ checked Sep 20, 2026	11-50	19 contacts →
	Partial evidence “SGD are a leading firm of accountants and tax advisers offering bespoke tax and accounting advice.” Source: RevenueBase Database · checked Sep 20, 2026
15	Wallace White Accountants	Indirect evidence	Glasgow, United KingdomHQ checked Sep 20, 2026	11-50	16 contacts →
	Indirect evidence “At Wallace White, we believe great advice should be not only accessible, but always clear and grounded in your goals.” Source: RevenueBase Database · checked Sep 20, 2026
16	DAS TAX And Advisory Group US And UK	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	11-50	16 contacts →
	Indirect evidence “A thriving business is always seeking to grow.” Source: RevenueBase Database · checked Sep 20, 2026
17	H M Williams Chartered Certified Accountants And TAX Advisers	Indirect evidence	Plympton, United KingdomHQ checked Sep 20, 2026	11-50	14 contacts →
	Indirect evidence “H M Williams are a firm who pride themselves on an up to date, friendly service.” Source: RevenueBase Database · checked Sep 20, 2026
18	Douglas Home & CO	Indirect evidence	Kelso, United KingdomHQ checked Sep 20, 2026	51-200	14 contacts →
	Indirect evidence “The modern practice of Douglas Home and Co came together in the late eighties with offices on the Quayside in Berwick upon Tweed and the market town of Kelso.” Source: RevenueBase Database · checked Sep 20, 2026
19	Shepherd Private Clients Limited	Indirect evidence	North West, United KingdomHQ checked Sep 20, 2026	1-10	13 contacts →
	Indirect evidence “Shepherd Private Clients was created in 2018.” Source: RevenueBase Database · checked Sep 20, 2026
20	Sanders Swinbank Limited	Indirect evidence	Darlington, United KingdomHQ checked Sep 20, 2026	1-10	13 contacts →
	Indirect evidence “Accountants in Darlington, providing a personalised service to business owners, doctors practices, doctors and individuals in Darlington and within an eighty mile radius.” Source: RevenueBase Database · checked Sep 20, 2026
21	Wilkins Southworth	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	11-50	13 contacts →
	Indirect evidence “Established in 1993, Wilkins Southworth is a friendly firm of accountants based in Barnes, South West London.” Source: RevenueBase Database · checked Sep 20, 2026
22	Hamish Leng & Company LTD	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	11-50	12 contacts →
	Indirect evidence “Based in Knightsbridge, we look after individuals and families to help them achieve financial security and order, and live the lives they want.” Source: RevenueBase Database · checked Sep 20, 2026
23	Neptune TAX	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	11-50	12 contacts →
	Partial evidence “Qualified US and UK tax advisors.” Source: RevenueBase Database · checked Sep 20, 2026
24	INTAX	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	11-50	11 contacts →
	Partial evidence “inTAX is a small, specialist tax firm, whose managing partner and team have many years experience.” Source: RevenueBase Database · checked Sep 20, 2026
25	AG TAX LTD	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	11-50	11 contacts →
	Partial evidence “AG Tax Limited is a successful and friendly independent firm offering tax compliance and advisory services alongside accounting, bookkeeping and payroll support.” Source: RevenueBase Database · checked Sep 20, 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: fiduciary tax preparation 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 fiduciary tax preparation firms.
Partial evidence: Its own public description names part of fiduciary tax preparation firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name fiduciary tax preparation 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 457 fiduciary tax preparation firms based in the United Kingdom

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Fiduciary tax preparation firms based in the United Kingdom at a glance

As of Sep 20, 2026

32.2%Verified-email coverage

5.4Average contacts per company

1-10Median size (employees)

21.0%Largest-city concentration · London

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

323

11-50

118

51-200

201-500

10001+

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 457 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 fiduciary tax preparation 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 “fiduciary tax preparation 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 fiduciary tax preparation 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 fiduciary tax preparation 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, 800 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 20, 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.

Fiduciary tax preparation firms by metro

Fiduciary tax preparation firms in London96

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 fiduciary tax preparation 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 fiduciary tax preparation firms are there based in the United Kingdom?

RevenueBase identified 457 fiduciary tax preparation 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?

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

Which city has the most fiduciary tax preparation firms?

London leads with 96 headquartered companies, followed by Birmingham (9) and Bristol (7).

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 800 verified decision-maker contacts tracked across these 457 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 20, 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.