Company lists · Data refreshed September 2026

Top 25 Internal audit service providers based in the United Kingdom

RevenueBase identified 89 company matches for internal audit service providers associated with the United Kingdom as of September 2026 and tracks 857 professional contacts across them, including 239 with verified work emails. London is the largest hub.

This list covers company matches for internal audit service providers 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 20, 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 20, 2026 How this list was built
89Companies
857Contacts tracked
239Verified emails
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The 25 largest internal audit service providers based in the United Kingdom

Ranked by team size
Top 25 of 89 company matches for internal audit service providers based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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 matchFareham, United KingdomHQ recorded Sep 20, 202651-200117 contacts →

Exact match

“Relax.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2Exact matchTaunton, United KingdomHQ recorded Sep 20, 202651-20071 contacts →

Exact match

“SWAP is a well established not for profit organisation that focuses on internal audit but also offers a variety of independent business improvement and assurance services designed…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact matchBristol, United KingdomHQ recorded Sep 20, 202611-5030 contacts →

Exact match

“Providers of proportionate and pragmatic integrated assurance support, advice and audit.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchDurham, United KingdomHQ recorded Sep 20, 202651-20026 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 20, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Sep 20, 202611-5023 contacts →

Exact match

“Independent Audit are leading specialists in governance, risk and assurance.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchBurntwood, United KingdomHQ recorded Sep 20, 202611-5016 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 20, 2026 · View company records in RevenueBase
7Exact matchCity Of London, United KingdomHQ recorded Sep 20, 2026201-50013 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 20, 2026 · View company records in RevenueBase
8Exact matchReigate, United KingdomHQ recorded Sep 20, 202611-5013 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 20, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Sep 20, 20261-1011 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 20, 2026 · View company records in RevenueBase
10Exact matchNottingham, United KingdomHQ recorded Sep 20, 202611-5010 contacts →

Exact match

“When you work with us, you can expect a no-fuss, reliable audit.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Sep 20, 202611-5010 contacts →

Exact match

“KCG is a leading provider of specialist internal audit and advisory services to the Higher Education sector.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Sep 20, 20261-108 contacts →

Exact match

“We are your trusted partners in the world of audit and assurance.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Sep 20, 20261-107 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 20, 2026 · View company records in RevenueBase
14Exact matchCheltenham, United KingdomHQ recorded Sep 20, 20261-107 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 20, 2026 · View company records in RevenueBase
15Exact matchCardiff, United KingdomHQ recorded Sep 20, 20261-103 contacts →

Exact match

“We help organisations manage risks to success.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchSurrey, United KingdomHQ recorded Sep 20, 20261-103 contacts →

Exact match

“At Apex Business Compliance Ltd, we make compliance as easy as ABC.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Sep 20, 20261-103 contacts →

Exact match

“We are an Internal Audit search firm operating within the Financial Services sector.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Sep 20, 202611-502 contacts →

Exact match

“Working closely with technology businesses to embed a controls culture and protect value for shareholders.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchAlderholt, United KingdomHQ recorded Sep 20, 20261-102 contacts →

Exact match

“Established in 2021, Elsiarc was created to develop a more personal approach to internal audit, regulatory compliance and risk management.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchUnited KingdomHQ recorded Sep 20, 20261-102 contacts →

Exact match

“We support audit committees, internal auditors and board members to have impact for their organisations.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchLondon, United KingdomHQ recorded Sep 20, 202611-502 contacts →

Exact match

“London Registrars Ltd is a firm specialising in corporate governance, risk and compliance services and offering legal and business advice to all types of organisations.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Sep 20, 20261-102 contacts →

Exact match

“GRR Consulting helps firms uplift Governance, Risk and Regulatory frameworks so that they can take a proactive and holistic approach to ensuring better control of the organisation.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23Exact matchLondon, United KingdomHQ recorded Sep 20, 20261-101 contacts →

Exact match

“KLA provides Governance, Risk, Compliance, ESG, Internal Audit, Business Process Improvement and Transformational Change services to large and small clients.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24Exact matchChristchurch, United KingdomHQ recorded Sep 20, 20261-101 contacts →

Exact match

“There are a number of significant pieces of legislation requiring a high level of compliance.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25Exact matchCanterbury, United KingdomHQ recorded Sep 20, 20261-101 contacts →

Exact match

“PEMBLES BUSINESS SERVICES LIMITED is a management consulting company offering general internal audit review and management services along with an array of specialised reviews…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

Showing 25 of 89 internal audit service providers based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 239 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Internal audit service providers based in the United Kingdom at a glance

As of Sep 20, 2026
27.9%Verified-email coverage
9.6Average contacts per company
1-10Median size (employees)
43.8%Largest-city concentration · London
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
60
11-50
22
51-200
5
201-500
2

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 89 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 “internal audit service providers” 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 239 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 20, 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.

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

How many internal audit service providers are there based in the United Kingdom?

RevenueBase identified 89 company matches for internal audit service providers 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?

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

Which city has the most internal audit service providers?

London leads with 39 company records, followed by Northampton (2) and Alderholt (1).

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 239 professional contacts with verified work emails tracked across these 89 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 20, 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.