Company lists · Data refreshed September 2026

Top 25 Compliance audit companies based in the United Kingdom

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

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 122 companies tracked

RevenueBase identified 122 compliance audit companies headquartered in the United Kingdom as of September 2026 and tracks 1,819 professional contacts across them, including 658 with verified work emails. London is the largest hub.

This list covers compliance audit 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. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 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 21, 2026 86% judged on-target in blind review

122Companies

1,819Contacts tracked

658Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest compliance audit companies based in the United Kingdom

Ranked by team size

Top 25 of 122 compliance audit companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to compliance audit companies: 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	British Engineering Services Group	Partial evidence	Warrington, United KingdomHQ checked Sep 21, 2026	1,001-5,000	776 contacts →
	Partial evidence “Testing, inspection, certification and compliance is our core business so that’s what gets 100% of our focus.” Source: RevenueBase Database · checked Sep 21, 2026
2	The Citation Group	Partial evidence	Wilmslow, United KingdomHQ checked Sep 21, 2026	1,001-5,000	291 contacts →
	Partial evidence “The Citation Group offer unrivalled compliance and quality services to over businesses across the UK, Australia, New Zealand, and Canada.” Source: RevenueBase Database · checked Sep 21, 2026
3	Firmdecisions	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	55 contacts →
	Indirect evidence “FirmDecisions, member of the Ebiquity Group Plc, is the largest independent global marketing auditor.” Source: RevenueBase Database · checked Sep 21, 2026
4	International Associates Limited	Partial evidence	Glasgow, United KingdomHQ checked Sep 21, 2026	51-200	50 contacts →
	Partial evidence “International Associates (IA) is a leading provider of assessment, audit, verification, certification and training services.” Source: RevenueBase Database · checked Sep 21, 2026
5	GCS Compliance	Partial evidence	Rochester, United KingdomHQ checked Sep 21, 2026	11-50	47 contacts →
	Partial evidence “GCS Compliance Ltd are a specialist independent auditing company providing quality safety, expert technical, compliance management consultancy services and professional training…” Source: RevenueBase Database · checked Sep 21, 2026
6	Inter Scientific	Partial evidence	Liverpool, United KingdomHQ checked Sep 21, 2026	11-50	26 contacts →
	Partial evidence “Our goal is to make regulation and compliance testing simple.” Source: RevenueBase Database · checked Sep 21, 2026
7	Total Compliance & Training In Transport, Logistics & Construction	Partial evidence	Grantham, United KingdomHQ checked Sep 21, 2026	11-50	24 contacts →
	Partial evidence “Welcome to Total Compliance - Your Trusted Partner for Legal Compliance and Education in Transport!” Source: RevenueBase Database · checked Sep 21, 2026
8	Eurofins York	Partial evidence	York, United KingdomHQ checked Sep 21, 2026	11-50	22 contacts →
	Partial evidence “Eurofins York has over 25 years’ experience delivering global regulatory compliance, CE marking solutions and certification.” Source: RevenueBase Database · checked Sep 21, 2026
9	Consultants Factory	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	20 contacts →
	Indirect evidence “We at CF assist enterprises manage IT risks better.” Source: RevenueBase Database · checked Sep 21, 2026
10	Veriserv	Partial evidence	Cannock, United KingdomHQ checked Sep 21, 2026	51-200	17 contacts →
	Partial evidence “Veriserv operate nationally helping businesses ensure their workplace is safe and meets electrical, fire, security and mechanical compliance standards.” Source: RevenueBase Database · checked Sep 21, 2026
11	Insurance Compliance Services LTD	Partial evidence	Royal Tunbridge Wells, United KingdomHQ checked Sep 21, 2026	11-50	14 contacts →
	Partial evidence “With almost twenty years of experience in compliance and the insurance industry, ICS Ltd know the importance of compliance and making it work for you.” Source: RevenueBase Database · checked Sep 21, 2026
12	Global Compliance & Regulatory Services LTD Gcrs Global	Partial evidence	Cardiff, United KingdomHQ checked Sep 21, 2026	1-10	14 contacts →
	Partial evidence “GCRS Global: Your Trusted Partner for Global Product Compliance GCRS Global is a leading B2B provider of compliance and regulatory services for a wide range of industries…” Source: RevenueBase Database · checked Sep 21, 2026
13	Oneclickcomply	Partial evidence	Sunderland, United KingdomHQ checked Sep 21, 2026	1-10	13 contacts →
	Partial evidence “OneClickComply® is at the forefront of compliance automation, revolutionising how businesses meet regulatory demands.” Source: RevenueBase Database · checked Sep 21, 2026
14	Adoptech	Strong evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	13 contacts →
	Strong evidence “Our aim is to help businesses prepare for security audits and maintain ongoing compliance efficiently and effectively.” Source: RevenueBase Database · checked Sep 21, 2026
15	John Williams	Indirect evidence	Reigate, United KingdomHQ checked Sep 21, 2026	11-50	13 contacts →
	Indirect evidence “We are registered auditors and have a wide experience in reporting under the Companies Act and the special rules which govern solicitors.” Source: RevenueBase Database · checked Sep 21, 2026
16	Volta Compliance	Partial evidence	Leeds, United KingdomHQ checked Sep 21, 2026	1-10	10 contacts →
	Partial evidence “Volta Compliance offers electrical compliance solutions.” Source: RevenueBase Database · checked Sep 21, 2026
17	Edgecomply	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	7 contacts →
	Partial evidence “EdgeComply is a hands-on product compliance partner helping brands meet regulations across the global markets they sell to.” Source: RevenueBase Database · checked Sep 21, 2026
18	Deepfathom	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	1-10	7 contacts →
	Partial evidence “DeepFathom's next generation auditing is changing the face of compliance.” Source: RevenueBase Database · checked Sep 21, 2026
19	JVR Consultancy LTD	Partial evidence	Windsor, United KingdomHQ checked Sep 21, 2026	11-50	7 contacts →
	Partial evidence “JVR Consultancy Limited is a UK-based compliance advisory and management systems consultancy helping businesses achieve, maintain and strengthen industry accreditations, supplier…” Source: RevenueBase Database · checked Sep 21, 2026
20	Luke ARC	Partial evidence	Birmingham, United KingdomHQ checked Sep 21, 2026	11-50	6 contacts →
	Partial evidence “Luke ARC are the UKs leading Gambling Compliance Consultancy.” Source: RevenueBase Database · checked Sep 21, 2026
21	Abac Center Of Excellence Limited	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	6 contacts →
	Indirect evidence “ABAC® educates, equips and supports the world’s leading business organisations with the latest best-in-practice risk assessments, performance assessments, systems improvement and…” Source: RevenueBase Database · checked Sep 21, 2026
22	Clear Decisions	Strong evidence	London, United KingdomHQ checked Sep 21, 2026	1-10	5 contacts →
	Strong evidence “Clear Decisions is the audit-ready compliance platform for modern data centres.” Source: RevenueBase Database · checked Sep 21, 2026
23	Swift Certification Limited	Indirect evidence	Nottingham, United KingdomHQ checked Sep 21, 2026	1-10	5 contacts →
	Indirect evidence “The Swift team come from a variety of business backgrounds.” Source: RevenueBase Database · checked Sep 21, 2026
24	Neil Wilson Group	Indirect evidence	Brierley Hill, United KingdomHQ checked Sep 21, 2026	1-10	5 contacts →
	Indirect evidence “Founded by Neil Wilson.” Source: RevenueBase Database · checked Sep 21, 2026
25	Clear Compliance	Partial evidence	Newport, United KingdomHQ checked Sep 21, 2026	1-10	4 contacts →
	Partial evidence “Clear Compliance, established in 2015, specialises in providing comprehensive compliance services primarily for businesses in the financial sector.” Source: RevenueBase Database · checked Sep 21, 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: compliance audit companies. 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 compliance audit companies.
Partial evidence: Its own public description names part of compliance audit companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name compliance audit companies. 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 122 compliance audit companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 658 reachable decision-makers.

Free signup · no credit card

View the full list →

Compliance audit companies based in the United Kingdom at a glance

As of Sep 21, 2026

36.2%Verified-email coverage

14.9Average contacts per company

1-10Median size (employees)

22.1%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

501-1,000

1,001-5,000

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 122 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 compliance audit companies, 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 “compliance audit companies”. 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 compliance audit companies), 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 compliance audit companies, 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, 658 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 21, 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.

Compliance audit companies by metro

Compliance audit companies in London27

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 compliance audit companies, 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 compliance audit companies are there based in the United Kingdom?

RevenueBase identified 122 compliance audit companies 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?

British Engineering Services Group, headquartered in Warrington, tops this list with the largest team on record.

Which city has the most compliance audit companies?

London leads with 27 headquartered companies, followed by Leeds (4) and Birmingham (3).

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 658 verified decision-maker contacts tracked across these 122 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 21, 2026.

Ready to reach these companies? Verified emails and direct dials for all 122 compliance audit companies based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Compliance audit companies by geography

Browse the directory

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.