Company lists · Data refreshed September 2026

Top 23 Internal audit consulting companies based in the United Kingdom

Name: Internal audit consulting 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 4, 2026 196 companies tracked

RevenueBase identified 196 internal audit consulting companies headquartered in the United Kingdom as of September 2026 and tracks 11,912 professional contacts across them, including 4,195 with verified work emails and 3,020 with mobile numbers. London is the largest hub.

This list covers internal audit consulting 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, how directly it supports the match, and when it was last checked. Data refreshed September 4, 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 HQ checked on every row Match evidence on every row Refreshed Sep 4, 2026 86% judged on-target in blind review

196Companies

11,912Contacts tracked

4,195Verified emails

3,020Mobile numbers

Unlock all 196 companies Free signup · no credit card · 500 free credits

The 23 largest internal audit consulting companies based in the United Kingdom

Ranked by team size

Top 23 of 196 internal audit consulting companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names internal audit consulting companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Crowe UKStrong evidence	London, United KingdomHQ checked Sep 4, 2026	1,001-5,000	1,381
	“Crowe UK is a leading audit, tax, advisory and consulting firm with a national presence to complement our international reach.” Source: company website · checked Sep 4, 2026
2	Mazars In The UKIndirect evidence	London, United KingdomHQ checked Sep 4, 2026	1,001-5,000	516
	Source: company website · checked Sep 4, 2026
3	Tiaa LTDIndirect evidence	Fareham, United KingdomHQ checked Sep 4, 2026	51-200	115
	“Relax.” Source: company website · checked Sep 4, 2026
4	Swap Internal Audit ServicesStrong evidence	Taunton, United KingdomHQ checked Sep 4, 2026	51-200	72
	“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…” Source: company website · checked Sep 4, 2026
5	Auditone UKStrong evidence	Durham, United KingdomHQ checked Sep 4, 2026	51-200	27
	“Providing internal audit, technology risk assurance and counter fraud services in the North of England.” Source: company website · checked Sep 4, 2026
6	KBM GroupPartial evidence	London, United KingdomHQ checked Sep 4, 2026	51-200	25
	“KBM Group was founded as a Chartered Certified Accountancy firm, offering advisory and consulting services for business start-ups and organizations looking to strengthen their…” Source: company website · checked Sep 4, 2026
7	Independent Audit LimitedPartial evidence	London, United KingdomHQ checked Sep 4, 2026	11-50	23
	“Independent Audit are leading specialists in governance, risk and assurance.” Source: company website · checked Sep 4, 2026
8	ValideraStrong evidence	Burntwood, United KingdomHQ checked Sep 4, 2026	11-50	17
	“Specialist internal audit, governance, risk and compliance services provider; helping our clients Improve, Comply and Optimise.” Source: company website · checked Sep 4, 2026
9	Recsel InternationalStrong evidence	London, United KingdomHQ checked Sep 4, 2026	1-10	17
	“RecSel International is the specialist recruitment consultancy for audit jobs across Europe.” Source: company website · checked Sep 4, 2026
10	Hanami InternationalStrong evidence	London, United KingdomHQ checked Sep 4, 2026	11-50	16
	“International recruitment specialists in Internal Audit & Professional Services Hanami International is an Internal Audit & Professional Services (including External Audit…” Source: company website · checked Sep 4, 2026
11	UHY BPR Heaton Chartered AccountantsIndirect evidence	Leeds, United KingdomHQ checked Sep 4, 2026	11-50	14
	“UHY BPR Heaton can trace its roots back to the 1920's and by focusing on looking after our clients we are now one of the largest independent chartered practices in the Yorkshire…” Source: company website · checked Sep 4, 2026
12	RiskbaseIndirect evidence	United KingdomHQ checked Sep 4, 2026	11-50	14
	“RiskBase helps larger consultancies and groups manage every stage of the compliance process, from creating Fire Risk Assessments through to completing remedial actions and…” Source: company website · checked Sep 4, 2026
13	Parker Russell UKPartial evidence	London, United KingdomHQ checked Sep 4, 2026	201-500	13
	“Parker Russell is a leading audit firm offering comprehensive services to medium to large corporations, specialising in FCA-regulated environments and stock exchange-listed…” Source: company website · checked Sep 4, 2026
14	John WilliamsIndirect evidence	Reigate, United KingdomHQ checked Sep 4, 2026	11-50	13
	“We are registered auditors and have a wide experience in reporting under the Companies Act and the special rules which govern solicitors.” Source: company website · checked Sep 4, 2026
15	Mills Pyatt LTDPartial evidence	Redditch, United KingdomHQ checked Sep 4, 2026	1-10	12
	“Mills Pyatt a professional Audit & Accounting firm based centrally in the UK, just south of Birmingham.” Source: company website · checked Sep 4, 2026
16	Octa AccountantsPartial evidence	Ilford, United KingdomHQ checked Sep 4, 2026	1-10	12
	“OCTA Accountants is one of the emerging accounting and consulting firms across the globe.” Source: company website · checked Sep 4, 2026
17	Accounting Crunchers LimitedPartial evidence	London, United KingdomHQ checked Sep 4, 2026	1-10	12
	“Accounting Crunchers Limited is a full-service business consulting and advisory firm with a global presence in the UAE, UK, Canada, and USA.” Source: company website · checked Sep 4, 2026
18	Cube Partners LimitedIndirect evidence	Northampton, United KingdomHQ checked Sep 4, 2026	11-50	11
	“Cube Partners Limited is a firm of Chartered Accountants and Registered Auditors, regulated by the Institute of Chartered Accountants in England & Wales.” Source: company website · checked Sep 4, 2026
19	Zenith Audit UK LTDPartial evidence	London, United KingdomHQ checked Sep 4, 2026	1-10	11
	“Zenith Audit UK is a specialist audit firm delivering assurance and risk management services to SMEs in the financial services industry and beyond.” Source: company website · checked Sep 4, 2026
20	Evolve North LTDIndirect evidence	Richmond, United KingdomHQ checked Sep 4, 2026	11-50	9
	“Evolve North is a specialist consultancy with subject matter expertise founded in Governance, Risk, and Compliance as well as IT Security and Assurance.” Source: company website · checked Sep 4, 2026
21	Xcina ConsultingPartial evidence	London, United KingdomHQ checked Sep 4, 2026	11-50	9
	“At Xcina Consulting we leverage a deep and experienced pool of skilled consultants to deliver all our assurance and advisory services.” Source: company website · checked Sep 4, 2026
22	Exsus AuditPartial evidence	London, United KingdomHQ checked Sep 4, 2026	11-50	9
	“EXSUS AUDITis offering a comprehensive range of accounting, auditing, tax planning and business consulting services to Cypriot and offshore companies and high net worth…” Source: company website · checked Sep 4, 2026
23	Murray HarcourtPartial evidence	Leeds, United KingdomHQ checked Sep 4, 2026	51-200	8
	“Murray Harcourt is an independent firm of audit, tax and risk management specialists with a passion for being a commercial, proactive and forward-thinking client resource.” Source: company website · checked Sep 4, 2026

Showing 23 of 196 internal audit consulting companies based in the United Kingdom

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Internal audit consulting companies based in the United Kingdom at a glance

As of Sep 4, 2026

1-10Median size (employees)

LondonLargest hub · 80 HQs

3,020Contacts with mobile numbers

Sep 4, 2026Data refreshed

Companies by employee count

1-10

130

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Verified emails by last verification

0–30

31–60

290

61–90

2,303

90–180

1,590

180+

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 internal audit consulting companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 “internal audit consulting companies”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among internal audit consulting 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 an evidence 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, 4,195 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 4, 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.

Internal audit consulting companies by metro

Internal audit consulting companies in London80

Frequently asked

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

RevenueBase identified 196 internal audit consulting 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?

Crowe UK, headquartered in Birmingham, tops this list with the largest team on record.

Which city has the most internal audit consulting companies?

London leads with 80 headquartered companies, followed by Birmingham (4) and Leeds (4).

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 4,195 verified decision-maker contacts tracked across these 196 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 4, 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.