Company lists · Data refreshed September 2026

Top 25 Audit firms based in the United Kingdom

RevenueBase identified 1,065 company matches for audit firms associated with the United Kingdom as of September 2026 and tracks 435,188 professional contacts across them, including 156,038 with verified work emails. London is the largest hub.

This list covers company matches for audit firms associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 19, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 19, 2026 How this list was built
1,065Companies
435,188Contacts tracked
156,038Verified emails
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The 25 largest audit firms based in the United Kingdom

Ranked by team size
Top 25 of 1,065 company matches for audit firms based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Sep 19, 202610001+375,085 contacts →

Exact match

“EY is building a better working world by creating new value for clients, people, society, the planet, while building trust in the capital markets.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Sep 19, 202610001+14,509 contacts →

Exact match

“Make growth happen.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Sep 19, 202610001+11,078 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Sep 19, 20265,001-10,0006,933 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Sep 19, 20265,001-10,0005,509 contacts →

Exact match

“When choosing an advisor, you could accept the usual compromises.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Sep 19, 20261,001-5,0001,930 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Sep 19, 20261,001-5,0001,395 contacts →

Exact match

“Crowe UK is a leading audit, tax, advisory and consulting firm with a national presence to complement our international reach.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Sep 19, 2026501-1,0001,151 contacts →

Exact match

“At Moore Kingston Smith, we believe in the potential of people to make a positive impact, fuelled by the power of genuine understanding.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9Exact matchUk And Ireland, United KingdomHQ recorded Sep 19, 20261,001-5,0001,125 contacts →

Exact match

“We provide services that help businesses at every stage of the lifecycle.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Sep 19, 202610001+725 contacts →

Exact match

“PKF is a global family of legally independent professional services firms bound together by a shared commitment to quality, integrity and the creation of clarity in a complex…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Sep 19, 2026501-1,000702 contacts →

Exact match

“We are a fast-growing firm of accountants and business advisers based in London’s Canary Wharf, Leeds and in Manchester.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12Exact matchExeter, United KingdomHQ recorded Sep 19, 2026501-1,000700 contacts →

Exact match

“Any good accountancy firm can help with your finance, audit, and tax.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Sep 19, 2026501-1,000602 contacts →

Exact match

“We guide our clients, colleagues and communities to a brighter future.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14Exact matchCarlisle, United KingdomHQ recorded Sep 19, 2026501-1,000579 contacts →

Exact match

“Armstrong Watson has been advising and protecting clients across the North of England and Scotland since 1867.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Sep 19, 202610001+512 contacts →

Exact match

“Kreston is a global network of innovative, like-minded accounting firms that puts trusted relationships and exceptional care at the heart of everything it does.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16Exact matchLondon, United KingdomHQ recorded Sep 19, 20261,001-5,000505 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17Exact matchWetherby, United KingdomHQ recorded Sep 19, 202651-200455 contacts →

Exact match

“Audit Partnership is on a mission to help our customers recover lost profits.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Sep 19, 2026201-500379 contacts →

Exact match

“Welcome to the new era of accountancy.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19Exact matchBirmingham, United KingdomHQ recorded Sep 19, 2026501-1,000374 contacts →

Exact match

“Your success matters.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Sep 19, 20261,001-5,000271 contacts →

Exact match

“Established in 1983, Russell Bedford is a global network of independent firms of accountants, auditors, tax advisers and business consultants.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21Exact matchNewbury, United KingdomHQ recorded Sep 19, 202651-200235 contacts →

Exact match

“James Cowper Kreston is a leading firm of accountants and business advisers, with offices in Newbury, Oxford, London, Reading and Southampton.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Sep 19, 202651-200203 contacts →

Exact match

“Lubbock Fine is an independent accounting, tax, audit and advisory firm in the City of London.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23Exact matchExeter, United KingdomHQ recorded Sep 19, 2026201-500196 contacts →

Exact match

“Westcotts have been offering experienced and talented partners and specialists to support a diverse range of individuals and businesses, operating in local, national and…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24Exact matchLondon, United KingdomHQ recorded Sep 19, 202610001+186 contacts →

Exact match

“UHY is a leading network of independent audit, accounting, tax and consulting firms with offices in more than 320 major business centres across 95 countries.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25Exact matchIpswich, United KingdomHQ recorded Sep 19, 2026201-500164 contacts →

Exact match

“From offices in Bury St Edmunds, Colchester, Norwich and Ipswich, Scrutton Bland serves a range of clients from small owner-managed businesses to large corporate organisations and…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

Showing 25 of 1,065 audit firms based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 156,038 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Audit firms based in the United Kingdom at a glance

As of Sep 19, 2026
35.9%Verified-email coverage
408.6Average contacts per company
1-10Median size (employees)
22.3%Largest-city concentration · London
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
628
11-50
318
51-200
57
201-500
11
501-1,000
10
1,001-5,000
14
5,001-10,000
5
10001+
9

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 1,065 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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
Company records associated with the United Kingdom whose business descriptions match “audit firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 156,038 professional contacts with verified work emails across the full matched dataset. 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.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Audit firms by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “audit firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many audit firms are there based in the United Kingdom?

RevenueBase identified 1,065 company matches for audit firms associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

EY tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most audit firms?

London leads with 238 company records, followed by Manchester (25) and Birmingham (20).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 156,038 professional contacts with verified work emails tracked across these 1,065 companies; direct dials are available where recorded.

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 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.