Company lists · Data refreshed September 2026

Top 25 Accounting and consultancy services based in the United Kingdom

Name: Accounting and consultancy services based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 8,471 companies tracked

RevenueBase identified 8,471 accounting and consultancy services headquartered in the United Kingdom as of September 2026 and tracks 93,718 professional contacts across them, including 39,784 with verified work emails and 3,870 with mobile numbers. London is the largest hub.

This list covers accounting and consultancy services 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 22, 2026 86% judged on-target in blind review

8,471Companies

93,718Contacts tracked

39,784Verified emails

3,870Mobile numbers

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The 25 largest accounting and consultancy services based in the United Kingdom

Ranked by team size

Top 25 of 8,471 accounting and consultancy services based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to accounting and consultancy services: 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	BDO UK	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	5,001-10,000	6,933 contacts →
	Indirect evidence “BDO LLP is an accountancy and business advisory firm that provides Audit, Tax, Deals, and Consulting, Risk & Outsourcing (CR & O) services to entrepreneurial, growing and…” Source: RevenueBase Database · checked Sep 22, 2026
2	Moore Global	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	5,001-10,000	2,047 contacts →
	Indirect evidence “At Moore, our purpose is to help people thrive – our clients, our people and the communities they live and work in.” Source: RevenueBase Database · checked Sep 22, 2026
3	TAX Consultant	Indirect evidence	Brighton, United KingdomHQ checked Sep 22, 2026	n/a	2,042 contacts →
	Indirect evidence “A traditional general practice, with a twist.” Source: RevenueBase Database · checked Sep 22, 2026
4	S&w	Partial evidence	London, United KingdomHQ checked Sep 22, 2026	1,001-5,000	1,930 contacts →
	Partial evidence “As a fast growing UK accounting and advisory firm, we’ve been there, as a trusted partner, helping businesses and individuals meet challenges and seize opportunities across…” Source: RevenueBase Database · checked Sep 22, 2026
5	Crowe UK	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	1,001-5,000	1,395 contacts →
	Indirect evidence “Crowe UK is a leading audit, tax, advisory and consulting firm with a national presence to complement our international reach.” Source: RevenueBase Database · checked Sep 22, 2026
6	Saffery	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	1,001-5,000	1,230 contacts →
	Indirect evidence “A partner-led and people-focused top 20 accountancy firm.” Source: RevenueBase Database · checked Sep 22, 2026
7	Moore Kingston Smith	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	501-1,000	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, 2026
8	AAB	Indirect evidence	Uk And Ireland, United KingdomHQ checked Sep 22, 2026	1,001-5,000	1,125 contacts →
	Indirect evidence “We provide services that help businesses at every stage of the lifecycle.” Source: RevenueBase Database · checked Sep 22, 2026
9	Xeinadin	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	1,001-5,000	1,001 contacts →
	Indirect evidence “We are a leading provider of accountancy services and business advice for small and medium-sized enterprises and individuals across the UK and Ireland.” Source: RevenueBase Database · checked Sep 22, 2026
10	TC Group	Indirect evidence	Steyning, United KingdomHQ checked Sep 22, 2026	1,001-5,000	901 contacts →
	Indirect evidence “TC Group \| 0330 088 \| At TC Group, everything we do is anchored in our purpose: shaping stronger businesses and building secure and meaningful futures.” Source: RevenueBase Database · checked Sep 22, 2026
11	Taxassist Accountants	Indirect evidence	Norwich, United KingdomHQ checked Sep 22, 2026	201-500	708 contacts →
	Indirect evidence “At TaxAssist Accountants we specialise in providing accountancy services, tax returns, payroll, bookkeeping, tax savings and tax advice to small businesses and support over…” Source: RevenueBase Database · checked Sep 22, 2026
12	PKF Littlejohn	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	501-1,000	702 contacts →
	Indirect evidence “We are a fast-growing firm of accountants and business advisers based in London’s Canary Wharf, Leeds and in Manchester.” Source: RevenueBase Database · checked Sep 22, 2026
13	Blick Rothenberg	Partial evidence	Covent Garden, United KingdomHQ checked Sep 22, 2026	501-1,000	701 contacts →
	Partial 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, 2026
14	Pkf-Francis Clark Chartered Accountants & Business Advisers	Indirect evidence	Exeter, United KingdomHQ checked Sep 22, 2026	501-1,000	700 contacts →
	Indirect evidence “Any good accountancy firm can help with your finance, audit, and tax.” Source: RevenueBase Database · checked Sep 22, 2026
15	Haysmac	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	501-1,000	655 contacts →
	Indirect 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, 2026
16	Kreston Reeves	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	501-1,000	602 contacts →
	Indirect evidence “We guide our clients, colleagues and communities to a brighter future.” Source: RevenueBase Database · checked Sep 22, 2026
17	Armstrong Watson	Indirect evidence	Carlisle, United KingdomHQ checked Sep 22, 2026	501-1,000	579 contacts →
	Indirect evidence “Armstrong Watson has been advising and protecting clients across the North of England and Scotland since 1867.” Source: RevenueBase Database · checked Sep 22, 2026
18	UHY Hacker Young	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	501-1,000	577 contacts →
	Indirect evidence “The UHY Hacker Young Group is an award winning Group of UK chartered accountants with offices spanning England, Wales and Northern Ireland.” Source: RevenueBase Database · checked Sep 22, 2026
19	Buzzacott	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	501-1,000	575 contacts →
	Indirect 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, 2026
20	Bishop Fleming Chartered Accountants	Partial evidence	Bristol, United KingdomHQ checked Sep 22, 2026	201-500	537 contacts →
	Partial evidence “Bishop Fleming is a Top 40 accounting firm in the UK and an award-winning tax practice.” Source: RevenueBase Database · checked Sep 22, 2026
21	Mazars In The UK	Indirect evidence	London, United KingdomHQ checked Sep 22, 2026	1,001-5,000	505 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
22	Price Bailey	Indirect evidence	Bishop's Stortford, United KingdomHQ checked Sep 22, 2026	201-500	500 contacts →
	Indirect evidence “Price Bailey is a leading firm of chartered accountants and business advisers with offices across East Anglia, London, and a strategic presence overseas, serving local SMEs…” Source: RevenueBase Database · checked Sep 22, 2026
23	Outbooks	Partial evidence	Harrow, United KingdomHQ checked Sep 22, 2026	201-500	477 contacts →
	Partial evidence “Outbooks is a leading provider of outsourcing services to accounting and bookkeeping firms.” Source: RevenueBase Database · checked Sep 22, 2026
24	Kpmg In The Crown Dependencies	Indirect evidence	Jersey, United KingdomHQ checked Sep 22, 2026	201-500	412 contacts →
	Indirect evidence “KPMG in the Crown Dependencies is a leading provider of professional services that includes audit, tax and advisory.” Source: RevenueBase Database · checked Sep 22, 2026
25	Bhp, Chartered Accountants	Indirect evidence	Sheffield, United KingdomHQ checked Sep 22, 2026	201-500	409 contacts →
	Indirect evidence “BHP is one of the largest firms of chartered accountants in Yorkshire, providing high-quality assurance, advisory, corporate finance and tax services.” Source: RevenueBase Database · checked Sep 22, 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: accounting and consultancy services. 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 accounting and consultancy services.
Partial evidence: Its own public description names part of accounting and consultancy services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name accounting and consultancy services. 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 8,471 accounting and consultancy services based in the United Kingdom

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Accounting and consultancy services based in the United Kingdom at a glance

As of Sep 22, 2026

42.5%Verified-email coverage

4.1%Mobile-number coverage

11.1Average contacts per company

1-10Median size (employees)

18.1%Largest-city concentration · London

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

5,925

11-50

2,030

51-200

300

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 24.0d

30,1250–30

8,97831–60

52061–90

4290–180

119180+

Company record updated

Median 87.0d

00–30

7,62631–60

56,52261–90

23,47290–180

6,098180+

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 accounting and consultancy services, 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 “accounting and consultancy services”. 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 accounting and consultancy services), 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 accounting and consultancy services, 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, 39,784 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.

Accounting and consultancy services 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 accounting and consultancy services, 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 accounting and consultancy services are there based in the United Kingdom?

RevenueBase identified 8,471 accounting and consultancy services 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?

BDO UK, headquartered in London, tops this list with the largest team on record.

Which city has the most accounting and consultancy services?

London leads with 1535 headquartered companies, followed by Manchester (159) and Birmingham (147).

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 39,784 verified decision-maker contacts tracked across these 8,471 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.