Company lists · Data refreshed September 2026
Top 25 Outsourcing accounting firms based in the United Kingdom
RevenueBase identified 3,347 company matches for outsourcing accounting firms associated with the United Kingdom as of September 2026 and tracks 20,975 professional contacts across them, including 5,956 with verified work emails. London is the largest hub.
This list covers company matches for outsourcing accounting 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 21, 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 outsourcing accounting firms based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 477 contacts → | ||||
Exact match “Outbooks is a leading provider of outsourcing services to accounting and bookkeeping firms.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 2 | 423 contacts → | ||||
Exact match “Corient is a specialist outsourced accounting and bookkeeping partner, built exclusively for UK accountancy practices.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 3 | 322 contacts → | ||||
Exact match “At SKS, we pride ourselves on being different.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 4 | 311 contacts → | ||||
Exact match “GI Outsourcing is a UK-based accountants outsourcing firm.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 5 | 187 contacts → | ||||
Exact match “Galloways is the fastest growing accounting services firm in Sussex.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 6 | 151 contacts → | ||||
Exact match “For 40 years, Ormerod Rutter have offered the specialist hands-on support that clients need to handle all of their tax, business and financial affairs.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 7 | 140 contacts → | ||||
Exact match “Burgess Hodgson are a Kent based accountancy firm with the skills and expertise to rival any other accountancy firm in the UK.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 8 | 134 contacts → | ||||
Exact match “Award winning accountants & tax advisors based in Newport, South Wales.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 9 | 118 contacts → | ||||
Exact match “Intelligent Outsourcing (iO) is an offshoring company in the Philippines dedicated to supporting UK accounting practices.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 10 | 108 contacts → | ||||
Exact match “As attention turns to the new fiscal year, accountants across the UK are finalising plans to boost growth and productivity and improve profitability.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 11 | 107 contacts → | ||||
Exact match “FLB is a firm of accountants providing core accounting services to a range of clients from start-ups, owner-managed businesses and private clients, to large corporates and…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 12 | 104 contacts → | ||||
Exact match “Online Accounting Service | Bookkeeping | Payroll | Personal Tax Return Filing to HMRC | Corporation Tax Filing | HMRC ONLINE FILING: Our aim is to help small business owners` tax…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 13 | 102 contacts → | ||||
Exact match “SJD is now Caroola Accountancy!” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 14 | 100 contacts → | ||||
Exact match “Paperchase Business Services Ltd (PBSL) is a firm of accountants, taxation and business advisors based in South London.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 15 | 98 contacts → | ||||
Exact match “At Rayner Essex, 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 your…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 16 | 96 contacts → | ||||
Exact match “Affinity Outsourcing is an accountancy outsourcing company that specialises in outsourcing for Accounting Practices.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 17 | 91 contacts → | ||||
Exact match “We focus on understanding your individual business needs.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 18 | 88 contacts → | ||||
Exact match “Sapphire is an accounting outsourcing company set up for accounting firms in UK and is based in India.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 19 | 84 contacts → | ||||
Exact match “Shah and Co is a firm of accountants based in Coventry offering accounts, taxation and business advisory and support services to a wide range of businesses and individuals.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 20 | 78 contacts → | ||||
Exact match “Base Practice Support Ltd is the UK's fastest-growing Accountancy Practice Support company.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 21 | 67 contacts → | ||||
Exact match “Isosceles Finance Helping ambitious businesses grow Isosceles is a business services company supporting rapidly growing and investor-backed companies with fractional CFO services…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 22 | 64 contacts → | ||||
Exact match “Affinity Associates Limited is a leading accounting firm based in Wembley, London, UK, and is regulated and authorised for public practice by both the ICAEW (Institute of…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 23 | 63 contacts → | ||||
Exact match “At Oasis Accountants we make sure to keep your business profitable.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 24 | 62 contacts → | ||||
Exact match “We offer online accounting services which simplify tax and finances for small businesses, by providing a fresh alternative to old-school high street accountants.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 25 | 62 contacts → | ||||
Exact match “Greybeard Solutions provides expert accounting outsourcing and business process automation services to SMEs worldwide.” Recorded in the RevenueBase company graph · Sep 21, 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 “outsourcing accounting 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 3,347 outsourcing accounting firms based in the United Kingdom
See the full list, filter by size, metro and specialty, and access 5,956 tracked professional contacts with verified work emails. Direct dials are available where recorded.
Free signup · no credit card
Outsourcing accounting firms based in the United Kingdom at a glance
As of Sep 21, 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 3,347 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 “outsourcing accounting 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 5,956 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 21, 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.
Outsourcing accounting firms by metro
- Outsourcing accounting firms in London626
- Outsourcing accounting firms in Manchester75
- Outsourcing accounting firms in Bristol49
- Outsourcing accounting firms in Birmingham43
- Outsourcing accounting firms in Nottingham35
- Outsourcing accounting firms in Glasgow31
- Outsourcing accounting firms in Leeds28
- Outsourcing accounting firms in Liverpool25
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 “outsourcing accounting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many outsourcing accounting firms are there based in the United Kingdom?
RevenueBase identified 3,347 company matches for outsourcing accounting 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?
Outbooks tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most outsourcing accounting firms?
London leads with 626 company records, followed by Manchester (75) and Bristol (49).
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 5,956 professional contacts with verified work emails tracked across these 3,347 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 21, 2026.
Ready to reach these companies? Verified emails and direct dials for all 3,347 outsourcing accounting firms based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Outsourcing accounting firms by geography
- Outsourcing accounting firms based in Adelaide, Australia
- Outsourcing accounting firms based in Brisbane, Australia
- Outsourcing accounting firms based in Melbourne, Australia
- Outsourcing accounting firms based in Perth, Australia
- Outsourcing accounting firms based in Sydney, Australia
- Outsourcing accounting firms based in Barueri, Brazil
- Outsourcing accounting firms based in Belo Horizonte, Brazil
- Outsourcing accounting firms based in Campinas, Brazil
- Outsourcing accounting firms based in Caxias Do Sul, Brazil
- Outsourcing accounting firms based in Curitiba, Brazil
- Outsourcing accounting firms based in Fortaleza, Brazil
- Outsourcing accounting firms based in Guarulhos, Brazil
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
- Outsourcing accounting firms based in Adelaide, Australia
- Outsourcing accounting firms based in Brisbane, Australia
- Outsourcing accounting firms based in Melbourne, Australia
- Outsourcing accounting firms based in Perth, Australia
- Outsourcing accounting firms based in Sydney, Australia
- Outsourcing accounting firms based in Barueri, Brazil
Company intelligence · public preview
Top 25 outsourcing accounting 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 3,347 matching company records for outsourcing accounting firms based in the United Kingdom, with 20,975 tracked contacts and 5,956 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 21, 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 outsourcing accounting 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 |  Outbooksoutbooks.co.ukHQ: Harrow, United KingdomReported employees: 201-500 | Harrow, United Kingdom | 201-500 | Exact match | 477 contacts → |
“Outbooks is a leading provider of outsourcing services to accounting and bookkeeping firms.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Corient Business Solutions Limitedcorientbs.co.ukHQ: Coventry, United KingdomReported employees: 501-1,000 | Coventry, United Kingdom | 501-1,000 | Exact match | 423 contacts → |
“Corient is a specialist outsourced accounting and bookkeeping partner, built exclusively for UK accountancy practices.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  SKS Business Servicessksbusinessservices.comHQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 322 contacts → |
“At SKS, we pride ourselves on being different.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  GI Outsourcinggioutsourcing.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 311 contacts → |
“GI Outsourcing is a UK-based accountants outsourcing firm.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Galloways Accountingwearegalloways.comHQ: Brighton, United KingdomReported employees: 201-500 | Brighton, United Kingdom | 201-500 | Exact match | 187 contacts → |
“Galloways is the fastest growing accounting services firm in Sussex.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Ormerod Rutter Chartered Accountantsormerodrutter.co.ukHQ: Droitwich, United KingdomReported employees: 51-200 | Droitwich, United Kingdom | 51-200 | Exact match | 151 contacts → |
“For 40 years, Ormerod Rutter have offered the specialist hands-on support that clients need to handle all of their tax, business and financial affairs.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Burgess Hodgsonburgesshodgson.co.ukHQ: Canterbury, United KingdomReported employees: 51-200 | Canterbury, United Kingdom | 51-200 | Exact match | 140 contacts → |
“Burgess Hodgson are a Kent based accountancy firm with the skills and expertise to rival any other accountancy firm in the UK.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  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 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Intelligent Outsourcingintelligentoutsourcing.co.uk HQ: Tunbridge Wells, United KingdomReported employees: 51-200 | Tunbridge Wells, United Kingdom | 51-200 | Exact match | 118 contacts → |
“Intelligent Outsourcing (iO) is an offshoring company in the Philippines dedicated to supporting UK accounting practices.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Initor Global UKinitor-global.co.uk HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 108 contacts → |
“As attention turns to the new fiscal year, accountants across the UK are finalising plans to boost growth and productivity and improve profitability.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  FLB Accountants LLPflb.co.ukHQ: Wokingham, United KingdomReported employees: 51-200 | Wokingham, United Kingdom | 51-200 | Exact match | 107 contacts → |
“FLB is a firm of accountants providing core accounting services to a range of clients from start-ups, owner-managed businesses and private clients, to large corporates and…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Debitamdebitam.comHQ: 42-44 Bishopsgate, United KingdomReported employees: 51-200 | 42-44 Bishopsgate, United Kingdom | 51-200 | Exact match | 104 contacts → |
“Online Accounting Service | Bookkeeping | Payroll | Personal Tax Return Filing to HMRC | Corporation Tax Filing | HMRC ONLINE FILING: Our aim is to help small business owners` tax…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  SJD Accountancycaroola.comHQ: Hemel Hempstead, United KingdomReported employees: 501-1,000 | Hemel Hempstead, United Kingdom | 501-1,000 | Exact match | 102 contacts → |
“SJD is now Caroola Accountancy!” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Paperchase Business Services LTDpbsl-uk.comHQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 100 contacts → |
“Paperchase Business Services Ltd (PBSL) is a firm of accountants, taxation and business advisors based in South London.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Rayner Essex LLPrayneressex.comHQ: St Albans, United KingdomReported employees: 51-200 | St Albans, United Kingdom | 51-200 | Exact match | 98 contacts → |
“At Rayner Essex, 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 your…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Affinity Outsourcing Limitedaffinityoutsourcing.netHQ: Wembley, United KingdomReported employees: 51-200 | Wembley, United Kingdom | 51-200 | Exact match | 96 contacts → |
“Affinity Outsourcing is an accountancy outsourcing company that specialises in outsourcing for Accounting Practices.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Goodman Jonesgoodmanjones.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 91 contacts → |
“We focus on understanding your individual business needs.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Sapphire Info Solutions P LTDsapphireinfo.net HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 88 contacts → |
“Sapphire is an accounting outsourcing company set up for accounting firms in UK and is based in India.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Shah & CO Chartered Certified Accountantsshahandco.co.ukHQ: Coventry, United KingdomReported employees: 11-50 | Coventry, United Kingdom | 11-50 | Exact match | 84 contacts → |
“Shah and Co is a firm of accountants based in Coventry offering accounts, taxation and business advisory and support services to a wide range of businesses and individuals.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Base Practice Support LTD Baseline Practice Support Smc-Pvt LTDbasepracticesupport.co.ukHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 78 contacts → |
“Base Practice Support Ltd is the UK's fastest-growing Accountancy Practice Support company.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Isosceles Financeisoscelesfinance.co.ukHQ: Egham, United KingdomReported employees: 51-200 | Egham, United Kingdom | 51-200 | Exact match | 67 contacts → |
“Isosceles Finance Helping ambitious businesses grow Isosceles is a business services company supporting rapidly growing and investor-backed companies with fractional CFO services…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Affinity Associates Limitedaffinityassociates.comHQ: Wembley, United KingdomReported employees: 201-500 | Wembley, United Kingdom | 201-500 | Exact match | 64 contacts → |
“Affinity Associates Limited is a leading accounting firm based in Wembley, London, UK, and is regulated and authorised for public practice by both the ICAEW (Institute of…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Oasis Accountants Limitedoasisaccountants.co.ukHQ: Chiswick Park, United KingdomReported employees: 11-50 | Chiswick Park, United Kingdom | 11-50 | Exact match | 63 contacts → |
“At Oasis Accountants we make sure to keep your business profitable.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  The Accountancy Partnershiptheaccountancy.co.ukHQ: Wirral, United KingdomReported employees: 51-200 | Wirral, United Kingdom | 51-200 | Exact match | 62 contacts → |
“We offer online accounting services which simplify tax and finances for small businesses, by providing a fresh alternative to old-school high street accountants.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Greybeard Automation & Outsourcinggreybeardsupport.comHQ: Brighouse, United KingdomReported employees: 11-50 | Brighouse, United Kingdom | 11-50 | Exact match | 62 contacts → |
“Greybeard Solutions provides expert accounting outsourcing and business process automation services to SMEs worldwide.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 3,347 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Outsourcing accounting firms: dataset insights
September 21, 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
3,309 records in the displayed employee bands.
38 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 3,347 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 21, 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 ↗
Outsourcing accounting firms by metro
- Outsourcing accounting firms in London626
- Outsourcing accounting firms in Manchester75
- Outsourcing accounting firms in Bristol49
- Outsourcing accounting firms in Birmingham43
- Outsourcing accounting firms in Nottingham35
- Outsourcing accounting firms in Glasgow31
- Outsourcing accounting firms in Leeds28
- Outsourcing accounting firms in Liverpool25
Questions about this company list
What does Exact match mean for outsourcing accounting 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 outsourcing accounting firms did RevenueBase find based in the United Kingdom?
The saved snapshot records 3,347 matching company records, 20,975 tracked contacts and 5,956 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 21, 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
Outsourcing accounting firms by geography
- Outsourcing accounting firms based in Adelaide, Australia
- Outsourcing accounting firms based in Brisbane, Australia
- Outsourcing accounting firms based in Melbourne, Australia
- Outsourcing accounting firms based in Perth, Australia
- Outsourcing accounting firms based in Sydney, Australia
- Outsourcing accounting firms based in Barueri, Brazil
- Outsourcing accounting firms based in Belo Horizonte, Brazil
- Outsourcing accounting firms based in Campinas, Brazil
- Outsourcing accounting firms based in Caxias Do Sul, Brazil
- Outsourcing accounting firms based in Curitiba, Brazil
- Outsourcing accounting firms based in Fortaleza, Brazil
- Outsourcing accounting firms based in Guarulhos, Brazil
Cite this list
RevenueBase Data Team. Top 25 outsourcing accounting firms based in the United Kingdom. Snapshot: September 21, 2026. https://revenuebase.ai/companies/outsourcing-accounting-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
- Outsourcing accounting firms based in Adelaide, Australia
- Outsourcing accounting firms based in Brisbane, Australia
- Outsourcing accounting firms based in Melbourne, Australia
- Outsourcing accounting firms based in Perth, Australia
- Outsourcing accounting firms based in Sydney, Australia
- Outsourcing accounting firms based in Barueri, Brazil
Company intelligence · public preview
Top 25 outsourcing accounting firms based in the United Kingdom
RevenueBase records 3,347 matching company records for outsourcing accounting firms based in the United Kingdom, with 20,975 tracked contacts and 5,956 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 21, 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 outsourcing accounting 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 | Outbooksoutbooks.co.uk HQ: Harrow, United KingdomReported employees: 201-500 | Harrow, United Kingdom | 201-500 | Exact match | 477 contacts → |
“Outbooks is a leading provider of outsourcing services to accounting and bookkeeping firms.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Corient Business Solutions Limitedcorientbs.co.uk HQ: Coventry, United KingdomReported employees: 501-1,000 | Coventry, United Kingdom | 501-1,000 | Exact match | 423 contacts → |
“Corient is a specialist outsourced accounting and bookkeeping partner, built exclusively for UK accountancy practices.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | SKS Business Servicessksbusinessservices.com HQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 322 contacts → |
“At SKS, we pride ourselves on being different.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | GI Outsourcinggioutsourcing.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 311 contacts → |
“GI Outsourcing is a UK-based accountants outsourcing firm.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Galloways Accountingwearegalloways.com HQ: Brighton, United KingdomReported employees: 201-500 | Brighton, United Kingdom | 201-500 | Exact match | 187 contacts → |
“Galloways is the fastest growing accounting services firm in Sussex.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Ormerod Rutter Chartered Accountantsormerodrutter.co.uk HQ: Droitwich, United KingdomReported employees: 51-200 | Droitwich, United Kingdom | 51-200 | Exact match | 151 contacts → |
“For 40 years, Ormerod Rutter have offered the specialist hands-on support that clients need to handle all of their tax, business and financial affairs.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Burgess Hodgsonburgesshodgson.co.uk HQ: Canterbury, United KingdomReported employees: 51-200 | Canterbury, United Kingdom | 51-200 | Exact match | 140 contacts → |
“Burgess Hodgson are a Kent based accountancy firm with the skills and expertise to rival any other accountancy firm in the UK.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | 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 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Intelligent Outsourcingintelligentoutsourcing.co.uk HQ: Tunbridge Wells, United KingdomReported employees: 51-200 | Tunbridge Wells, United Kingdom | 51-200 | Exact match | 118 contacts → |
“Intelligent Outsourcing (iO) is an offshoring company in the Philippines dedicated to supporting UK accounting practices.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Initor Global UKinitor-global.co.uk HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 108 contacts → |
“As attention turns to the new fiscal year, accountants across the UK are finalising plans to boost growth and productivity and improve profitability.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | FLB Accountants LLPflb.co.uk HQ: Wokingham, United KingdomReported employees: 51-200 | Wokingham, United Kingdom | 51-200 | Exact match | 107 contacts → |
“FLB is a firm of accountants providing core accounting services to a range of clients from start-ups, owner-managed businesses and private clients, to large corporates and…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Debitamdebitam.com HQ: 42-44 Bishopsgate, United KingdomReported employees: 51-200 | 42-44 Bishopsgate, United Kingdom | 51-200 | Exact match | 104 contacts → |
“Online Accounting Service | Bookkeeping | Payroll | Personal Tax Return Filing to HMRC | Corporation Tax Filing | HMRC ONLINE FILING: Our aim is to help small business owners` tax…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | SJD Accountancycaroola.com HQ: Hemel Hempstead, United KingdomReported employees: 501-1,000 | Hemel Hempstead, United Kingdom | 501-1,000 | Exact match | 102 contacts → |
“SJD is now Caroola Accountancy!” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Paperchase Business Services LTDpbsl-uk.com HQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 100 contacts → |
“Paperchase Business Services Ltd (PBSL) is a firm of accountants, taxation and business advisors based in South London.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Rayner Essex LLPrayneressex.com HQ: St Albans, United KingdomReported employees: 51-200 | St Albans, United Kingdom | 51-200 | Exact match | 98 contacts → |
“At Rayner Essex, 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 your…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Affinity Outsourcing Limitedaffinityoutsourcing.net HQ: Wembley, United KingdomReported employees: 51-200 | Wembley, United Kingdom | 51-200 | Exact match | 96 contacts → |
“Affinity Outsourcing is an accountancy outsourcing company that specialises in outsourcing for Accounting Practices.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Goodman Jonesgoodmanjones.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 91 contacts → |
“We focus on understanding your individual business needs.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Sapphire Info Solutions P LTDsapphireinfo.net HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 88 contacts → |
“Sapphire is an accounting outsourcing company set up for accounting firms in UK and is based in India.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Shah & CO Chartered Certified Accountantsshahandco.co.uk HQ: Coventry, United KingdomReported employees: 11-50 | Coventry, United Kingdom | 11-50 | Exact match | 84 contacts → |
“Shah and Co is a firm of accountants based in Coventry offering accounts, taxation and business advisory and support services to a wide range of businesses and individuals.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Base Practice Support LTD Baseline Practice Support Smc-Pvt LTDbasepracticesupport.co.uk HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 78 contacts → |
“Base Practice Support Ltd is the UK's fastest-growing Accountancy Practice Support company.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Isosceles Financeisoscelesfinance.co.uk HQ: Egham, United KingdomReported employees: 51-200 | Egham, United Kingdom | 51-200 | Exact match | 67 contacts → |
“Isosceles Finance Helping ambitious businesses grow Isosceles is a business services company supporting rapidly growing and investor-backed companies with fractional CFO services…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Affinity Associates Limitedaffinityassociates.com HQ: Wembley, United KingdomReported employees: 201-500 | Wembley, United Kingdom | 201-500 | Exact match | 64 contacts → |
“Affinity Associates Limited is a leading accounting firm based in Wembley, London, UK, and is regulated and authorised for public practice by both the ICAEW (Institute of…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Oasis Accountants Limitedoasisaccountants.co.uk HQ: Chiswick Park, United KingdomReported employees: 11-50 | Chiswick Park, United Kingdom | 11-50 | Exact match | 63 contacts → |
“At Oasis Accountants we make sure to keep your business profitable.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | The Accountancy Partnershiptheaccountancy.co.uk HQ: Wirral, United KingdomReported employees: 51-200 | Wirral, United Kingdom | 51-200 | Exact match | 62 contacts → |
“We offer online accounting services which simplify tax and finances for small businesses, by providing a fresh alternative to old-school high street accountants.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Greybeard Automation & Outsourcinggreybeardsupport.com HQ: Brighouse, United KingdomReported employees: 11-50 | Brighouse, United Kingdom | 11-50 | Exact match | 62 contacts → |
“Greybeard Solutions provides expert accounting outsourcing and business process automation services to SMEs worldwide.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 3,347 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Outsourcing accounting firms: dataset insights
September 21, 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
3,309 records in the displayed employee bands.
38 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 3,347 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 21, 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 ↗
Outsourcing accounting firms by metro
- Outsourcing accounting firms in London626
- Outsourcing accounting firms in Manchester75
- Outsourcing accounting firms in Bristol49
- Outsourcing accounting firms in Birmingham43
- Outsourcing accounting firms in Nottingham35
- Outsourcing accounting firms in Glasgow31
- Outsourcing accounting firms in Leeds28
- Outsourcing accounting firms in Liverpool25
Questions about this company list
What does Exact match mean for outsourcing accounting 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 outsourcing accounting firms did RevenueBase find based in the United Kingdom?
The saved snapshot records 3,347 matching company records, 20,975 tracked contacts and 5,956 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 21, 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
Outsourcing accounting firms by geography
- Outsourcing accounting firms based in Adelaide, Australia
- Outsourcing accounting firms based in Brisbane, Australia
- Outsourcing accounting firms based in Melbourne, Australia
- Outsourcing accounting firms based in Perth, Australia
- Outsourcing accounting firms based in Sydney, Australia
- Outsourcing accounting firms based in Barueri, Brazil
- Outsourcing accounting firms based in Belo Horizonte, Brazil
- Outsourcing accounting firms based in Campinas, Brazil
- Outsourcing accounting firms based in Caxias Do Sul, Brazil
- Outsourcing accounting firms based in Curitiba, Brazil
- Outsourcing accounting firms based in Fortaleza, Brazil
- Outsourcing accounting firms based in Guarulhos, Brazil
Cite this list
RevenueBase Data Team. Top 25 outsourcing accounting firms based in the United Kingdom. Snapshot: September 21, 2026. https://revenuebase.ai/companies/outsourcing-accounting-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
- Outsourcing accounting firms based in Adelaide, Australia
- Outsourcing accounting firms based in Brisbane, Australia
- Outsourcing accounting firms based in Melbourne, Australia
- Outsourcing accounting firms based in Perth, Australia
- Outsourcing accounting firms based in Sydney, Australia
- Outsourcing accounting firms based in Barueri, Brazil