Company lists · Data verified August 2026

Top 23 Audit services companies based in the United Kingdom

Name: Audit services companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 49 companies tracked

There are 49 audit services companies headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 890 professional contacts across them, including 307 with verified work emails and 25 with mobile numbers. London is the largest hub.

This list covers audit services companies headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

49Companies

890Contacts tracked

307Verified emails

25Mobile numbers

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The 23 largest audit services companies based in the United Kingdom

Ranked by team size

Top 23 of 49 audit services companies based in the United Kingdom, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Mazars In The UK	London	1,001-5,000	516	231
2	Parker Russell UK	London	201-500	13	9
3	John Williams	Reigate	11-50	13	1
4	Octa Accountants	Ilford	1-10	12	3
5	Cube Partners Limited	Northampton	11-50	11	9
6	Clouders Audit & Accounts LTD	Leigh-On-Sea	11-50	11	7
7	Zenith Audit UK LTD	London	1-10	11	7
8	Xcina Consulting	London	11-50	9	5
9	Chater Allan LLP	Stow Cum Quy	11-50	8	7
10	Just Audit	Nottingham	11-50	8	6
11	Mcmillan Woods Audits Limited	London	1-10	8	5
12	Byrd Link	Cheltenham	1-10	7	3
13	ZEN Chartered Accountants	Bristol	1-10	4	3
14	Bickham Montgomery	London	1-10	3	1
15	Elsiarc Limited	Alderholt	1-10	2	2
16	The Reckoner LTD	Crawley	11-50	2	1
17	Shaw & CO	Norwich	1-10	2	1
18	Hemsley Miller Chartered Accountants	Chesham	1-10	2	1
19	Armstrong Watson Audit Limited	Carlisle	11-50	1	1
20	Kenneth Easby Limited	Northallerton	11-50	1	1
21	Rochester & Associates	Bradford	1-10	1	1
22	PK Audit LLP	Richmond	1-10	1	1
23	Practice Compliance Services Limited	n/a	1-10	1	1

Showing 23 of 49 audit services companies based in the United Kingdom

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Audit services companies based in the United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 15 HQs

25Contacts with mobile numbers

4Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

201-500

1,001-5,000

Audit services companies by metro

Metro	Companies
Audit services companies in London	15
Audit services companies in Ilford	2
Audit services companies in Northallerton	2
Audit services companies in Northampton	2
Audit services companies in Manchester	1
Audit services companies in Richmond	1
Audit services companies in Belfast	1
Audit services companies in Chesham	1

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “audit services companies”, with match quality audited by blind human judging, and headquartered in the United Kingdom.
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: Contact records re-verify on a rolling cadence; 4 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many audit services companies are there based in the United Kingdom?

There are 49 audit services companies headquartered in the United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

Mazars In The UK, headquartered in London, tops this list with the largest team on record.

Which city has the most audit services companies?

London leads with 15 headquartered companies, followed by Ilford (2) and Northallerton (2).

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 307 verified decision-maker contacts tracked across these 49 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.