Company lists · Data refreshed September 2026
Top 25 Internal audit consulting firms based in the United Kingdom
RevenueBase identified 190 internal audit consulting firms headquartered in the United Kingdom as of September 2026 and tracks 12,162 professional contacts across them, including 4,294 with verified work emails and 3,037 with mobile numbers. London is the largest hub.
This list covers internal audit consulting firms 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.
The 25 largest internal audit consulting firms based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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, 2026Thanks. The Data Team will review it. | |||||
| 2 | 516 | ||||
Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 3 | Tiaa LTDIndirect evidence | 115 | |||
“Relax.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 4 | Swap Internal Audit ServicesStrong evidence | 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, 2026Thanks. The Data Team will review it. | |||||
| 5 | 51 | ||||
“Adams & Moore is a professional firm of Auditors, Tax and Professional Advisors offering a comprehensive range of accounting, compliance, financial and business advisory services…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 6 | 27 | ||||
“Providing internal audit, technology risk assurance and counter fraud services in the North of England.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 7 | 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, 2026Thanks. The Data Team will review it. | |||||
| 8 | 23 | ||||
“Independent Audit are leading specialists in governance, risk and assurance.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 9 | 20 | ||||
“What we do We are a specialist professional services firm providing consulting and assurance services, particularly to the Financial Services sector.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 10 | 17 | ||||
“Specialist internal audit, governance, risk and compliance services provider; helping our clients Improve, Comply and Optimise.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 11 | 17 | ||||
“RecSel International is the specialist recruitment consultancy for audit jobs across Europe.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 12 | Mirador Solutions ConsultancyIndirect evidence | 16 | |||
“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…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 13 | 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, 2026Thanks. The Data Team will review it. | |||||
| 14 | 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, 2026Thanks. The Data Team will review it. | |||||
| 15 | 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, 2026Thanks. The Data Team will review it. | |||||
| 16 | John WilliamsIndirect evidence | 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, 2026Thanks. The Data Team will review it. | |||||
| 17 | Mills Pyatt LTDPartial evidence | 12 | |||
“Mills Pyatt a professional Audit & Accounting firm based centrally in the UK, just south of Birmingham.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 18 | 12 | ||||
“OCTA Accountants is one of the emerging accounting and consulting firms across the globe.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 19 | 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, 2026Thanks. The Data Team will review it. | |||||
| 20 | 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, 2026Thanks. The Data Team will review it. | |||||
| 21 | 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, 2026Thanks. The Data Team will review it. | |||||
| 22 | 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, 2026Thanks. The Data Team will review it. | |||||
| 23 | 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, 2026Thanks. The Data Team will review it. | |||||
| 24 | 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, 2026Thanks. The Data Team will review it. | |||||
| 25 | 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, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 190 internal audit consulting firms based in the United Kingdom
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Internal audit consulting firms based in the United Kingdom at a glance
As of Sep 4, 2026Companies by employee count
Verified emails by last verification
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 firms, 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 firms”. 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 firms, 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, 4,294 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 firms by metro
- Internal audit consulting firms in London77
Frequently asked
How many internal audit consulting firms are there based in the United Kingdom?
RevenueBase identified 190 internal audit consulting firms 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 firms?
London leads with 77 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 4,294 verified decision-maker contacts tracked across these 190 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.
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