Company lists · Data refreshed September 2026

Top 25 IT audit consultancies based in the United Kingdom

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

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 159 companies tracked

RevenueBase identified 159 company matches for IT audit consultancies associated with the United Kingdom as of September 2026 and tracks 1,601 professional contacts across them, including 232 with verified work emails. London is the largest hub.

This list covers company matches for IT audit consultancies 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 28, 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 28, 2026 How this list was built

159Companies

1,601Contacts tracked

232Verified emails

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The 25 largest IT audit consultancies based in the United Kingdom

Ranked by team size

Top 25 of 159 company matches for IT audit consultancies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Omnicyber Security	Exact match	Solihull, United KingdomHQ recorded Sep 28, 2026	11-50	31 contacts →
	Exact match “SPECIALISTS IN IT SECURITY AND COMPLIANCE Our goal is to help customers define, develop and implement information security and compliance services, no matter what stage of the…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2	Occam Group	Exact match	Bristol, United KingdomHQ recorded Sep 28, 2026	11-50	30 contacts →
	Exact match “Providers of proportionate and pragmatic integrated assurance support, advice and audit.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3	Auditone UK	Exact match	Durham, United KingdomHQ recorded Sep 28, 2026	51-200	26 contacts →
	Exact match “Providing internal audit, technology risk assurance and counter fraud services in the North of England.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4	Independent Audit Limited	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	23 contacts →
	Exact match “Independent Audit are leading specialists in governance, risk and assurance.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5	Consultants Factory	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	20 contacts →
	Exact match “We at CF assist enterprises manage IT risks better.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6	Mirador Solutions Consultancy	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	17 contacts →
	Exact match “Trusted Partner to the Financial Services From the business, to your business Mirador Solutions Consultancy is a trusted and strategic partner for financial services firms, with…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7	Recsel International	Exact match	Victoria, United KingdomHQ recorded Sep 28, 2026	1-10	17 contacts →
	Exact match “RecSel International is the specialist recruitment consultancy for audit jobs across Europe.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8	Validera	Exact match	Burntwood, United KingdomHQ recorded Sep 28, 2026	11-50	16 contacts →
	Exact match “Specialist internal audit, governance, risk and compliance services provider; helping our clients Improve, Comply and Optimise.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9	Hanami International	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	16 contacts →
	Exact match “International recruitment specialists in Internal Audit & Professional Services Hanami International is an Internal Audit & Professional Services (including External Audit…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10	Parker Russell UK	Exact match	City Of London, United KingdomHQ recorded Sep 28, 2026	201-500	13 contacts →
	Exact match “Parker Russell is a leading audit firm offering comprehensive services to medium to large corporations, specialising in FCA-regulated environments and stock exchange-listed…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11	Octa Accountants	Exact match	Essex, United KingdomHQ recorded Sep 28, 2026	1-10	13 contacts →
	Exact match “OCTA Accountants is one of the emerging accounting and consulting firms across the globe.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12	John Williams	Exact match	Reigate, United KingdomHQ recorded Sep 28, 2026	11-50	13 contacts →
	Exact match “We are registered auditors and have a wide experience in reporting under the Companies Act and the special rules which govern solicitors.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13	Cyber Guarded LTD	Exact match	Belfast, United KingdomHQ recorded Sep 28, 2026	11-50	12 contacts →
	Exact match “Cyber Guarded is a vendor independent business which provides Cyber Security auditing and testing services.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14	Zenith Audit UK LTD	Exact match	London, United KingdomHQ recorded Sep 28, 2026	1-10	11 contacts →
	Exact match “Zenith Audit UK is a specialist audit firm delivering assurance and risk management services to SMEs in the financial services industry and beyond.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15	Just Audit	Exact match	Nottingham, United KingdomHQ recorded Sep 28, 2026	11-50	10 contacts →
	Exact match “When you work with us, you can expect a no-fuss, reliable audit.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16	Corporate IT Systems Limited	Exact match	Poole, United KingdomHQ recorded Sep 28, 2026	11-50	9 contacts →
	Exact match “Corporate IT Systems (CITSL) helps the organisations society depends on most make trust provable.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17	Cube Partners Limited	Exact match	Northampton, United KingdomHQ recorded Sep 28, 2026	11-50	9 contacts →
	Exact match “Cube Partners Limited is a firm of Chartered Accountants and Registered Auditors, regulated by the Institute of Chartered Accountants in England & Wales.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18	Slade & Cooper	Exact match	Manchester, United KingdomHQ recorded Sep 28, 2026	1-10	9 contacts →
	Exact match “We are a Manchester-based firm of accountants and auditors working with charities, social enterprises and co-operatives.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19	Xcina Consulting	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	9 contacts →
	Exact match “At Xcina Consulting we leverage a deep and experienced pool of skilled consultants to deliver all our assurance and advisory services.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20	Exsus Audit	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	9 contacts →
	Exact match “EXSUS AUDITis offering a comprehensive range of accounting, auditing, tax planning and business consulting services to Cypriot and offshore companies and high net worth…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21	Mcmillan Woods Audits Limited	Exact match	London, United KingdomHQ recorded Sep 28, 2026	1-10	8 contacts →
	Exact match “We are your trusted partners in the world of audit and assurance.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22	Cortida	Exact match	London, United KingdomHQ recorded Sep 28, 2026	11-50	7 contacts →
	Exact match “Through excellent consultancy we protect clients from reputation damage, financial penalties and the operational disruption associated with data incidents and cyberattacks.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23	Cybersrc Consultancy LTD	Exact match	London, United KingdomHQ recorded Sep 28, 2026	1-10	7 contacts →
	Exact match “CyberSRC specialises in 1LoD & 2LoD Operational & IT Risk, Security and Control Management & Transformation through developing, implementing, auditing, risk assessing and managing…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24	Byrd Link	Exact match	Cheltenham, United KingdomHQ recorded Sep 28, 2026	1-10	7 contacts →
	Exact match “Founded on the belief that auditing can be positive and stress-free, Byrd + Link specialise in partnering with leading regional Accountancy Practices, and supporting commercial…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25	Altus Enterprises LTD	Exact match	Glasgow City, United KingdomHQ recorded Sep 28, 2026	1-10	7 contacts →
	Exact match “Independent Audit, Niche Consultancy, Efficiency Reviews, Procurement and Business Intelligence across the print, postal and courier categories.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “IT audit consultancies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 159 IT audit consultancies based in the United Kingdom

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IT audit consultancies based in the United Kingdom at a glance

As of Sep 28, 2026

14.5%Verified-email coverage

10.1Average contacts per company

1-10Median size (employees)

40.3%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

110

11-50

51-200

201-500

1,001-5,000

5,001-10,000

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 159 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 “IT audit consultancies” 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 232 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 28, 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.

IT audit consultancies by metro

IT audit consultancies in London64

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 “IT audit consultancies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many IT audit consultancies are there based in the United Kingdom?

RevenueBase identified 159 company matches for IT audit consultancies 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?

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

Which city has the most IT audit consultancies?

London leads with 64 company records, followed by Belfast (3) and Cheltenham (3).

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 232 professional contacts with verified work emails tracked across these 159 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 28, 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.