Company lists · Data refreshed September 2026
Top 25 Audit and assurance firms based in the United Kingdom
RevenueBase identified 304 company matches for audit and assurance firms associated with the United Kingdom as of September 2026 and tracks 414,720 professional contacts across them, including 149,222 with verified work emails. London is the largest hub.
This list covers company matches for audit and assurance firms 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 19, 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 audit and assurance firms based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 375,085 contacts → | ||||
Exact match “EY is building a better working world by creating new value for clients, people, society, the planet, while building trust in the capital markets.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 2 | 14,509 contacts → | ||||
Exact match “Make growth happen.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 3 | 11,078 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 4 | 6,933 contacts → | ||||
Exact match “BDO LLP is an accountancy and business advisory firm that provides Audit, Tax, Deals, and Consulting, Risk & Outsourcing (CR & O) services to entrepreneurial, growing and…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 5 | 1,395 contacts → | ||||
Exact match “Crowe UK is a leading audit, tax, advisory and consulting firm with a national presence to complement our international reach.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 6 | 702 contacts → | ||||
Exact match “We are a fast-growing firm of accountants and business advisers based in London’s Canary Wharf, Leeds and in Manchester.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 7 | 505 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 8 | 415 contacts → | ||||
Exact match “What does business need now?” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 9 | 271 contacts → | ||||
Exact match “Established in 1983, Russell Bedford is a global network of independent firms of accountants, auditors, tax advisers and business consultants.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 10 | 203 contacts → | ||||
Exact match “Lubbock Fine is an independent accounting, tax, audit and advisory firm in the City of London.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 11 | 167 contacts → | ||||
Exact match “Chartered Accountants, Tax and Business Advisors based in Aberdeen, Dundee, Edinburgh and Glasgow.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 12 | 134 contacts → | ||||
Exact match “Award winning accountants & tax advisors based in Newport, South Wales.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 13 | 116 contacts → | ||||
Exact match “At Harris & Trotter, we believe your accountant should do a lot more than just report on how your business is doing – he or she should help you identify opportunities to improve…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 14 | 106 contacts → | ||||
Exact match “Azets can help you achieve your business ambitions.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 15 | 73 contacts → | ||||
Exact match “MG Group is a multi-disciplinary practice providing accounting, tax, audit, legal and business consulting services.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 16 | 71 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 19, 2026 · View company records in RevenueBase | |||||
| 17 | 70 contacts → | ||||
Exact match “HWB is a leading firm of Chartered Accountants offering the depth of resource and specialist skills of a national practice.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 18 | 65 contacts → | ||||
Exact match “At Nordens, we get it - we really do.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 19 | 64 contacts → | ||||
Exact match “Meralis Chartered Accountants and Registered Auditors were set up by Mahmud Merali to provide accountancy, auditing and consultancy services to clients both at national and…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 20 | 55 contacts → | ||||
Exact match “Dafferns is a friendly, dynamic firm of accountants.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 21 | 53 contacts → | ||||
Exact match “Adams & Moore is a professional firm of Auditors, Tax and Professional Advisors offering a comprehensive range of accounting, compliance, financial and business advisory services…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 22 | 48 contacts → | ||||
Exact match “ACCOUNTAX.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 23 | 40 contacts → | ||||
Exact match “We are accountants, tax advisors and auditors based in Manchester and Liverpool, working across the UK supporting businesses, individuals and other institutions/bodies providing…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 24 | 32 contacts → | ||||
Exact match “Founded in 1885, we've grown to be one of the major accounting firms in Teesside and the Tees Valley.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 25 | 32 contacts → | ||||
Exact match “Morris Owen - chartered accountants, business advisers and tax advisers.” Recorded in the RevenueBase company graph · Sep 19, 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 “audit and assurance firms”. 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 304 audit and assurance firms based in the United Kingdom
See the full list, filter by size, metro and specialty, and access 149,222 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Audit and assurance firms based in the United Kingdom at a glance
As of Sep 19, 2026Companies by employee count
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 304 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 “audit and assurance firms” 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 149,222 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 19, 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 “audit and assurance firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many audit and assurance firms are there based in the United Kingdom?
RevenueBase identified 304 company matches for audit and assurance firms 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?
EY tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most audit and assurance firms?
London leads with 97 company records, followed by Glasgow (9) and Manchester (8).
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 149,222 professional contacts with verified work emails tracked across these 304 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 19, 2026.
Ready to reach these companies? Verified emails and direct dials for all 304 audit and assurance firms based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Audit and assurance firms by geography
- Audit and assurance firms based in Belo Horizonte, Brazil
- Audit and assurance firms based in Curitiba, Brazil
- Audit and assurance firms based in Recife, Brazil
- Audit and assurance firms based in Rio De Janeiro, Brazil
- Audit and assurance firms based in Sao Paulo, Brazil
- Audit and assurance firms based in Lyon, France
- Audit and assurance firms based in Marseille, France
- Audit and assurance firms based in Paris, France
- Audit and assurance firms based in Ahmedabad, India
- Audit and assurance firms based in Bangalore, India
- Audit and assurance firms based in Chennai, India
- Audit and assurance firms based in Delhi, India
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Audit and assurance firms based in Belo Horizonte, Brazil
- Audit and assurance firms based in Curitiba, Brazil
- Audit and assurance firms based in Recife, Brazil
- Audit and assurance firms based in Rio De Janeiro, Brazil
- Audit and assurance firms based in Sao Paulo, Brazil
- Audit and assurance firms based in Lyon, France
Company intelligence · public preview
Top 25 audit and assurance firms based in the United Kingdom
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 304 matching company records for audit and assurance firms based in the United Kingdom, with 414,720 tracked contacts and 149,222 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 19, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 audit and assurance firms based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  EYey.comHQ: London, United KingdomReported employees: 10001+ | London, United Kingdom | 10001+ | Exact match | 375,085 contacts → |
“EY is building a better working world by creating new value for clients, people, society, the planet, while building trust in the capital markets.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Kpmg UKkpmg.comHQ: London, United KingdomReported employees: 10001+ | London, United Kingdom | 10001+ | Exact match | 14,509 contacts → |
“Make growth happen.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  PWC UKpwcukcareers.comHQ: London, United KingdomReported employees: 10001+ | London, United Kingdom | 10001+ | Exact match | 11,078 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 4 |  BDO UKbdo.co.ukHQ: London, United KingdomReported employees: 5,001-10,000 | London, United Kingdom | 5,001-10,000 | Exact match | 6,933 contacts → |
“BDO LLP is an accountancy and business advisory firm that provides Audit, Tax, Deals, and Consulting, Risk & Outsourcing (CR & O) services to entrepreneurial, growing and…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Crowe UKcrowe.co.ukHQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 1,395 contacts → |
“Crowe UK is a leading audit, tax, advisory and consulting firm with a national presence to complement our international reach.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  PKF Littlejohnpkf-l.comHQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 702 contacts → |
“We are a fast-growing firm of accountants and business advisers based in London’s Canary Wharf, Leeds and in Manchester.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Mazars In The UKmazars.co.ukHQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 505 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 8 |  Grant Thornton UK LLPgrantthornton.co.ukHQ: London, United KingdomReported employees: 5,001-10,000 | London, United Kingdom | 5,001-10,000 | Exact match | 415 contacts → |
“What does business need now?” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Russell Bedford Internationalrussellbedford.comHQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 271 contacts → |
“Established in 1983, Russell Bedford is a global network of independent firms of accountants, auditors, tax advisers and business consultants.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Lubbock Finelubbockfine.co.ukHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 203 contacts → |
“Lubbock Fine is an independent accounting, tax, audit and advisory firm in the City of London.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Henderson Loggiehlca.co.ukHQ: Dundee, United KingdomReported employees: 51-200 | Dundee, United Kingdom | 51-200 | Exact match | 167 contacts → |
“Chartered Accountants, Tax and Business Advisors based in Aberdeen, Dundee, Edinburgh and Glasgow.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  HSJ Accountants, Business & TAX Advisorshsjaccountants.co.ukHQ: Newport, United KingdomReported employees: 51-200 | Newport, United Kingdom | 51-200 | Exact match | 134 contacts → |
“Award winning accountants & tax advisors based in Newport, South Wales.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Harris & Trotter LLPharrisandtrotter.co.ukHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 116 contacts → |
“At Harris & Trotter, we believe your accountant should do a lot more than just report on how your business is doing – he or she should help you identify opportunities to improve…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Azets Previously Tait Walkerazets.co.ukHQ: Newcastle Upon Tyne, United KingdomReported employees: 5,001-10,000 | Newcastle Upon Tyne, United Kingdom | 5,001-10,000 | Exact match | 106 contacts → |
“Azets can help you achieve your business ambitions.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  MG Groupmggroup.co.ukHQ: Harrow, United KingdomReported employees: 11-50 | Harrow, United Kingdom | 11-50 | Exact match | 73 contacts → |
“MG Group is a multi-disciplinary practice providing accounting, tax, audit, legal and business consulting services.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Swap Internal Audit Servicesswapaudit.co.ukHQ: Taunton, United KingdomReported employees: 51-200 | Taunton, United Kingdom | 51-200 | Exact match | 71 contacts → |
“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 description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  HWB Chartered Accountantshwb-accountants.comHQ: Chandlers Ford, United KingdomReported employees: 51-200 | Chandlers Ford, United Kingdom | 51-200 | Exact match | 70 contacts → |
“HWB is a leading firm of Chartered Accountants offering the depth of resource and specialist skills of a national practice.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Nordens Chartered Accountantsnordens.co.ukHQ: Woodford Green, United KingdomReported employees: 51-200 | Woodford Green, United Kingdom | 51-200 | Exact match | 65 contacts → |
“At Nordens, we get it - we really do.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Merali's Chartered Accountants & Registered Auditorsmeralisgroup.comHQ: Harrow, United KingdomReported employees: 11-50 | Harrow, United Kingdom | 11-50 | Exact match | 64 contacts → |
“Meralis Chartered Accountants and Registered Auditors were set up by Mahmud Merali to provide accountancy, auditing and consultancy services to clients both at national and…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Dafferns Accountantsdafferns.comHQ: Coventry, United KingdomReported employees: 11-50 | Coventry, United Kingdom | 11-50 | Exact match | 55 contacts → |
“Dafferns is a friendly, dynamic firm of accountants.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Adams & Mooreadamsandmoore.co.ukHQ: Dartford, United KingdomReported employees: 51-200 | Dartford, United Kingdom | 51-200 | Exact match | 53 contacts → |
“Adams & Moore is a professional firm of Auditors, Tax and Professional Advisors offering a comprehensive range of accounting, compliance, financial and business advisory services…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Accountax Consultants UK Limitedacountax.co.uk HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 48 contacts → |
“ACCOUNTAX.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  UHY Williamson Croftwilliamsoncroft.co.ukHQ: Manchester, United KingdomReported employees: 11-50 | Manchester, United Kingdom | 11-50 | Exact match | 40 contacts → |
“We are accountants, tax advisors and auditors based in Manchester and Liverpool, working across the UK supporting businesses, individuals and other institutions/bodies providing…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Waltons Business Advisers & Chartered Accountantswaltonsba.co.uk HQ: Hartlepool, United KingdomReported employees: 11-50 | Hartlepool, United Kingdom | 11-50 | Exact match | 32 contacts → |
“Founded in 1885, we've grown to be one of the major accounting firms in Teesside and the Tees Valley.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Morris Owenmorrisowen.comHQ: Swindon, United KingdomReported employees: 51-200 | Swindon, United Kingdom | 51-200 | Exact match | 32 contacts → |
“Morris Owen - chartered accountants, business advisers and tax advisers.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 304 company matches
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Audit and assurance firms: dataset insights
September 19, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
299 records in the displayed employee bands.
5 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 304 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 19, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for audit and assurance firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many audit and assurance firms did RevenueBase find based in the United Kingdom?
The saved snapshot records 304 matching company records, 414,720 tracked contacts and 149,222 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 19, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Audit and assurance firms by geography
- Audit and assurance firms based in Belo Horizonte, Brazil
- Audit and assurance firms based in Curitiba, Brazil
- Audit and assurance firms based in Recife, Brazil
- Audit and assurance firms based in Rio De Janeiro, Brazil
- Audit and assurance firms based in Sao Paulo, Brazil
- Audit and assurance firms based in Lyon, France
- Audit and assurance firms based in Marseille, France
- Audit and assurance firms based in Paris, France
- Audit and assurance firms based in Ahmedabad, India
- Audit and assurance firms based in Bangalore, India
- Audit and assurance firms based in Chennai, India
- Audit and assurance firms based in Delhi, India
Cite this list
RevenueBase Data Team. Top 25 audit and assurance firms based in the United Kingdom. Snapshot: September 19, 2026. https://revenuebase.ai/companies/audit-and-assurance-firms/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Audit and assurance firms based in Belo Horizonte, Brazil
- Audit and assurance firms based in Curitiba, Brazil
- Audit and assurance firms based in Recife, Brazil
- Audit and assurance firms based in Rio De Janeiro, Brazil
- Audit and assurance firms based in Sao Paulo, Brazil
- Audit and assurance firms based in Lyon, France
Company intelligence · public preview
Top 25 audit and assurance firms based in the United Kingdom
RevenueBase records 304 matching company records for audit and assurance firms based in the United Kingdom, with 414,720 tracked contacts and 149,222 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 19, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 audit and assurance firms based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | EYey.com HQ: London, United KingdomReported employees: 10001+ | London, United Kingdom | 10001+ | Exact match | 375,085 contacts → |
“EY is building a better working world by creating new value for clients, people, society, the planet, while building trust in the capital markets.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Kpmg UKkpmg.com HQ: London, United KingdomReported employees: 10001+ | London, United Kingdom | 10001+ | Exact match | 14,509 contacts → |
“Make growth happen.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | PWC UKpwcukcareers.com HQ: London, United KingdomReported employees: 10001+ | London, United Kingdom | 10001+ | Exact match | 11,078 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 4 | BDO UKbdo.co.uk HQ: London, United KingdomReported employees: 5,001-10,000 | London, United Kingdom | 5,001-10,000 | Exact match | 6,933 contacts → |
“BDO LLP is an accountancy and business advisory firm that provides Audit, Tax, Deals, and Consulting, Risk & Outsourcing (CR & O) services to entrepreneurial, growing and…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Crowe UKcrowe.co.uk HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 1,395 contacts → |
“Crowe UK is a leading audit, tax, advisory and consulting firm with a national presence to complement our international reach.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | PKF Littlejohnpkf-l.com HQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 702 contacts → |
“We are a fast-growing firm of accountants and business advisers based in London’s Canary Wharf, Leeds and in Manchester.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Mazars In The UKmazars.co.uk HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 505 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 8 | Grant Thornton UK LLPgrantthornton.co.uk HQ: London, United KingdomReported employees: 5,001-10,000 | London, United Kingdom | 5,001-10,000 | Exact match | 415 contacts → |
“What does business need now?” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Russell Bedford Internationalrussellbedford.com HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 271 contacts → |
“Established in 1983, Russell Bedford is a global network of independent firms of accountants, auditors, tax advisers and business consultants.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Lubbock Finelubbockfine.co.uk HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 203 contacts → |
“Lubbock Fine is an independent accounting, tax, audit and advisory firm in the City of London.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Henderson Loggiehlca.co.uk HQ: Dundee, United KingdomReported employees: 51-200 | Dundee, United Kingdom | 51-200 | Exact match | 167 contacts → |
“Chartered Accountants, Tax and Business Advisors based in Aberdeen, Dundee, Edinburgh and Glasgow.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | HSJ Accountants, Business & TAX Advisorshsjaccountants.co.uk HQ: Newport, United KingdomReported employees: 51-200 | Newport, United Kingdom | 51-200 | Exact match | 134 contacts → |
“Award winning accountants & tax advisors based in Newport, South Wales.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Harris & Trotter LLPharrisandtrotter.co.uk HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 116 contacts → |
“At Harris & Trotter, we believe your accountant should do a lot more than just report on how your business is doing – he or she should help you identify opportunities to improve…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Azets Previously Tait Walkerazets.co.uk HQ: Newcastle Upon Tyne, United KingdomReported employees: 5,001-10,000 | Newcastle Upon Tyne, United Kingdom | 5,001-10,000 | Exact match | 106 contacts → |
“Azets can help you achieve your business ambitions.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | MG Groupmggroup.co.uk HQ: Harrow, United KingdomReported employees: 11-50 | Harrow, United Kingdom | 11-50 | Exact match | 73 contacts → |
“MG Group is a multi-disciplinary practice providing accounting, tax, audit, legal and business consulting services.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Swap Internal Audit Servicesswapaudit.co.uk HQ: Taunton, United KingdomReported employees: 51-200 | Taunton, United Kingdom | 51-200 | Exact match | 71 contacts → |
“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 description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | HWB Chartered Accountantshwb-accountants.com HQ: Chandlers Ford, United KingdomReported employees: 51-200 | Chandlers Ford, United Kingdom | 51-200 | Exact match | 70 contacts → |
“HWB is a leading firm of Chartered Accountants offering the depth of resource and specialist skills of a national practice.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Nordens Chartered Accountantsnordens.co.uk HQ: Woodford Green, United KingdomReported employees: 51-200 | Woodford Green, United Kingdom | 51-200 | Exact match | 65 contacts → |
“At Nordens, we get it - we really do.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Merali's Chartered Accountants & Registered Auditorsmeralisgroup.com HQ: Harrow, United KingdomReported employees: 11-50 | Harrow, United Kingdom | 11-50 | Exact match | 64 contacts → |
“Meralis Chartered Accountants and Registered Auditors were set up by Mahmud Merali to provide accountancy, auditing and consultancy services to clients both at national and…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Dafferns Accountantsdafferns.com HQ: Coventry, United KingdomReported employees: 11-50 | Coventry, United Kingdom | 11-50 | Exact match | 55 contacts → |
“Dafferns is a friendly, dynamic firm of accountants.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Adams & Mooreadamsandmoore.co.uk HQ: Dartford, United KingdomReported employees: 51-200 | Dartford, United Kingdom | 51-200 | Exact match | 53 contacts → |
“Adams & Moore is a professional firm of Auditors, Tax and Professional Advisors offering a comprehensive range of accounting, compliance, financial and business advisory services…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Accountax Consultants UK Limitedacountax.co.uk HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 48 contacts → |
“ACCOUNTAX.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | UHY Williamson Croftwilliamsoncroft.co.uk HQ: Manchester, United KingdomReported employees: 11-50 | Manchester, United Kingdom | 11-50 | Exact match | 40 contacts → |
“We are accountants, tax advisors and auditors based in Manchester and Liverpool, working across the UK supporting businesses, individuals and other institutions/bodies providing…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Waltons Business Advisers & Chartered Accountantswaltonsba.co.uk HQ: Hartlepool, United KingdomReported employees: 11-50 | Hartlepool, United Kingdom | 11-50 | Exact match | 32 contacts → |
“Founded in 1885, we've grown to be one of the major accounting firms in Teesside and the Tees Valley.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Morris Owenmorrisowen.com HQ: Swindon, United KingdomReported employees: 51-200 | Swindon, United Kingdom | 51-200 | Exact match | 32 contacts → |
“Morris Owen - chartered accountants, business advisers and tax advisers.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 304 company matches
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Audit and assurance firms: dataset insights
September 19, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
299 records in the displayed employee bands.
5 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 304 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 19, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for audit and assurance firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many audit and assurance firms did RevenueBase find based in the United Kingdom?
The saved snapshot records 304 matching company records, 414,720 tracked contacts and 149,222 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 19, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 audit and assurance firms based in the United Kingdom. Snapshot: September 19, 2026. https://revenuebase.ai/companies/audit-and-assurance-firms/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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- Audit and assurance firms based in Belo Horizonte, Brazil
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