Company lists · Data refreshed September 2026
Top 25 Tax preparation outsourcing companies based in the United Kingdom
RevenueBase identified 709 company matches for tax preparation outsourcing companies associated with the United Kingdom as of September 2026 and tracks 4,076 professional contacts across them, including 1,092 with verified work emails. London is the largest hub.
This list covers company matches for tax preparation outsourcing companies 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 29, 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 tax preparation outsourcing companies 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 29, 2026 · View company records in RevenueBase | |||||
| 2 | 311 contacts → | ||||
Exact match “GI Outsourcing is a UK-based accountants outsourcing firm.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 3 | 177 contacts → | ||||
Exact match “Thoughtfully structuring and managing your tax affairs is more important than ever.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 4 | 134 contacts → | ||||
Exact match “Award winning accountants & tax advisors based in Newport, South Wales.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 5 | 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 29, 2026 · View company records in RevenueBase | |||||
| 6 | 54 contacts → | ||||
Exact match “DSL is one of the UK's leading small business accountancy firms, helping businesses grow since 1997.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 7 | 53 contacts → | ||||
Exact match “At Artifin Accountants we strive to provide a more open experience of accounting services for business owners.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 8 | 42 contacts → | ||||
Exact match “At PSB Accountants, we put your goals and aspirations first.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 9 | 41 contacts → | ||||
Exact match “Moore Northern Home Counties offers a wide range of accountancy, tax and advisory services.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 10 | 40 contacts → | ||||
Exact match “Producing the annual accounts and managing the tax liability is vital for every business, but RiverView Portfolio Ltd offers more than just the number crunching.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 11 | 36 contacts → | ||||
Exact match “Helping business owners be successful has been our ethos for over 25 years.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 12 | 23 contacts → | ||||
Exact match “Your Accountant for Life Sadofskys provides trusted advice and first-class service to business and personal clients across the communities we serve.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 13 | 23 contacts → | ||||
Exact match “Xcelentra specializes in accounting, taxation, payroll, finance, and immigration services across the UK and Europe.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 14 | 21 contacts → | ||||
Exact match “At Amber Solutions, we make it easy for our clients to complete, manage and file corporate and individual tax returns, small to medium and enterprise level documents and much more.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 15 | 20 contacts → | ||||
Exact match “We are more than just numbers.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 16 | 20 contacts → | ||||
Exact match “Kress Cooper is a key regional player in Tax, Audit and Advisory services.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 17 | 20 contacts → | ||||
Exact match “Clearcut is a global team of qualified, experienced accountants and tax advisers, with expertise in tax and accounting services for Limited Companies, Contractors, Locums, Sole…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 18 | 17 contacts → | ||||
Exact match “Parker Cavendish provides a range of service to small and medium sized businesses and individuals.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 19 | 17 contacts → | ||||
Exact match “Boobooks offers expert accounting, tax, and business support services tailored for small businesses.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 20 | 17 contacts → | ||||
Exact match “We give you beautiful figures and help you achieve your financial goals.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 21 | 16 contacts → | ||||
Exact match “At Wallace White, we believe great advice should be not only accessible, but always clear and grounded in your goals.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 22 | 16 contacts → | ||||
Exact match “A thriving business is always seeking to grow.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 23 | 15 contacts → | ||||
Exact match “AIS Accountants are business tacticians for growth providing accountancy and business services to a range of aspiring SMEs and individuals.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 24 | 14 contacts → | ||||
Exact match “H M Williams are a firm who pride themselves on an up to date, friendly service.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 25 | 14 contacts → | ||||
Exact match “Minford - More Than Just Accountants So what's different?” Recorded in the RevenueBase company graph · Sep 29, 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 “tax preparation outsourcing companies”. 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 709 tax preparation outsourcing companies based in the United Kingdom
See the full list, filter by size, metro and specialty, and access 1,092 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Tax preparation outsourcing companies based in the United Kingdom at a glance
As of Sep 29, 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 709 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 “tax preparation outsourcing companies” 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 1,092 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 29, 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.
Tax preparation outsourcing companies by metro
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 “tax preparation outsourcing companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many tax preparation outsourcing companies are there based in the United Kingdom?
RevenueBase identified 709 company matches for tax preparation outsourcing companies 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 tax preparation outsourcing companies?
London leads with 165 company records, followed by Manchester (19) and Birmingham (13).
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 1,092 professional contacts with verified work emails tracked across these 709 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 29, 2026.
Ready to reach these companies? Verified emails and direct dials for all 709 tax preparation outsourcing companies based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Tax preparation outsourcing companies by geography
- Tax preparation outsourcing companies based in Melbourne, Australia
- Tax preparation outsourcing companies based in Sydney, Australia
- Tax preparation outsourcing companies based in Vienna, Austria
- Tax preparation outsourcing companies based in Belo Horizonte, Brazil
- Tax preparation outsourcing companies based in Curitiba, Brazil
- Tax preparation outsourcing companies based in Porto Alegre, Brazil
- Tax preparation outsourcing companies based in Rio De Janeiro, Brazil
- Tax preparation outsourcing companies based in Sao Paulo, Brazil
- Tax preparation outsourcing companies based in Calgary, Canada
- Tax preparation outsourcing companies based in Edmonton, Canada
- Tax preparation outsourcing companies based in Mississauga, Canada
- Tax preparation outsourcing companies based in Ottawa, Canada
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
- Tax preparation outsourcing companies based in Melbourne, Australia
- Tax preparation outsourcing companies based in Sydney, Australia
- Tax preparation outsourcing companies based in Vienna, Austria
- Tax preparation outsourcing companies based in Belo Horizonte, Brazil
- Tax preparation outsourcing companies based in Curitiba, Brazil
- Tax preparation outsourcing companies based in Porto Alegre, Brazil
Company intelligence · public preview
Top 25 tax preparation outsourcing companies 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 709 matching company records for tax preparation outsourcing companies based in the United Kingdom, with 4,076 tracked contacts and 1,092 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 29, 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 tax preparation outsourcing companies 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 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  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 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | HQ: London, United KingdomReported employees: 10001+ | London, United Kingdom | 10001+ | Exact match | 177 contacts → |
“Thoughtfully structuring and managing your tax affairs is more important than ever.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  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 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  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 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  DSL Accountingdslaccounting.comHQ: Leamington Spa, United KingdomReported employees: Not recorded | Leamington Spa, United Kingdom | Not recorded | Exact match | 54 contacts → |
“DSL is one of the UK's leading small business accountancy firms, helping businesses grow since 1997.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Artifin Accountantsartifinaccountants.co.ukHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 53 contacts → |
“At Artifin Accountants we strive to provide a more open experience of accounting services for business owners.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  PSB Accountants Limitedp-s-b.co.ukHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 42 contacts → |
“At PSB Accountants, we put your goals and aspirations first.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Moore Northern Home Counties Limitedmoorestephens.co.ukHQ: Stevenage, United KingdomReported employees: 51-200 | Stevenage, United Kingdom | 51-200 | Exact match | 41 contacts → |
“Moore Northern Home Counties offers a wide range of accountancy, tax and advisory services.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Riverview Portfolio LTDriverviewportfolio.co.ukHQ: Calne, United KingdomReported employees: 11-50 | Calne, United Kingdom | 11-50 | Exact match | 40 contacts → |
“Producing the annual accounts and managing the tax liability is vital for every business, but RiverView Portfolio Ltd offers more than just the number crunching.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Friend & Grant LTDfriendandgrant.co.uk HQ: Rochester, United KingdomReported employees: 11-50 | Rochester, United Kingdom | 11-50 | Exact match | 36 contacts → |
“Helping business owners be successful has been our ethos for over 25 years.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Sadofskyssadofskys.co.ukHQ: Hull, United KingdomReported employees: 11-50 | Hull, United Kingdom | 11-50 | Exact match | 23 contacts → |
“Your Accountant for Life Sadofskys provides trusted advice and first-class service to business and personal clients across the communities we serve.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Xcelentra Financial Services LTDxcelentra.comHQ: Milton Keynes, United KingdomReported employees: 51-200 | Milton Keynes, United Kingdom | 51-200 | Exact match | 23 contacts → |
“Xcelentra specializes in accounting, taxation, payroll, finance, and immigration services across the UK and Europe.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Amber Business Solutions London LTDamberbusinesssolutions.netHQ: Ruislip, United KingdomReported employees: 11-50 | Ruislip, United Kingdom | 11-50 | Exact match | 21 contacts → |
“At Amber Solutions, we make it easy for our clients to complete, manage and file corporate and individual tax returns, small to medium and enterprise level documents and much more.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | BKB Accountantsbkbaccountants.co.uk HQ: Poole, United KingdomReported employees: 11-50 | Poole, United Kingdom | 11-50 | Exact match | 20 contacts → |
“We are more than just numbers.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Kress Cooper Chartered Accountantskresscooper.comHQ: Richmond, United KingdomReported employees: 11-50 | Richmond, United Kingdom | 11-50 | Exact match | 20 contacts → |
“Kress Cooper is a key regional player in Tax, Audit and Advisory services.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Clearcut Accountingclearcutaccounting.co.ukHQ: Manchester, United KingdomReported employees: 11-50 | Manchester, United Kingdom | 11-50 | Exact match | 20 contacts → |
“Clearcut is a global team of qualified, experienced accountants and tax advisers, with expertise in tax and accounting services for Limited Companies, Contractors, Locums, Sole…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Parker Cavendishparkercavendish.co.uk HQ: Stanmore, United KingdomReported employees: 11-50 | Stanmore, United Kingdom | 11-50 | Exact match | 17 contacts → |
“Parker Cavendish provides a range of service to small and medium sized businesses and individuals.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Boobooksboobooks.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 17 contacts → |
“Boobooks offers expert accounting, tax, and business support services tailored for small businesses.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | E-Accountants Limitede-accountants.net HQ: Richmond, United KingdomReported employees: 1-10 | Richmond, United Kingdom | 1-10 | Exact match | 17 contacts → |
“We give you beautiful figures and help you achieve your financial goals.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Wallace White Accountantswallacewhite.comHQ: Glasgow, United KingdomReported employees: 11-50 | Glasgow, United Kingdom | 11-50 | Exact match | 16 contacts → |
“At Wallace White, we believe great advice should be not only accessible, but always clear and grounded in your goals.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  DAS TAX And Advisory Group US And UKdasaccounting.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 16 contacts → |
“A thriving business is always seeking to grow.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  AIS Accountants Limited, Suite 4 , 34a Waterloo Road, London, Nw2 7uhaisaccountants.co.ukHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 15 contacts → |
“AIS Accountants are business tacticians for growth providing accountancy and business services to a range of aspiring SMEs and individuals.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  H M Williams Chartered Certified Accountants And TAX Advisershmwilliams.co.ukHQ: Plympton, United KingdomReported employees: 11-50 | Plympton, United Kingdom | 11-50 | Exact match | 14 contacts → |
“H M Williams are a firm who pride themselves on an up to date, friendly service.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Minford Accountantsminford.eu HQ: York, United KingdomReported employees: 11-50 | York, United Kingdom | 11-50 | Exact match | 14 contacts → |
“Minford - More Than Just Accountants So what's different?” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 709 company matches
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Tax preparation outsourcing companies: dataset insights
September 29, 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
698 records in the displayed employee bands.
11 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 709 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 29, 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 ↗
Tax preparation outsourcing companies by metro
Questions about this company list
What does Exact match mean for tax preparation outsourcing companies?
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 tax preparation outsourcing companies did RevenueBase find based in the United Kingdom?
The saved snapshot records 709 matching company records, 4,076 tracked contacts and 1,092 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 29, 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
Tax preparation outsourcing companies by geography
- Tax preparation outsourcing companies based in Melbourne, Australia
- Tax preparation outsourcing companies based in Sydney, Australia
- Tax preparation outsourcing companies based in Vienna, Austria
- Tax preparation outsourcing companies based in Belo Horizonte, Brazil
- Tax preparation outsourcing companies based in Curitiba, Brazil
- Tax preparation outsourcing companies based in Porto Alegre, Brazil
- Tax preparation outsourcing companies based in Rio De Janeiro, Brazil
- Tax preparation outsourcing companies based in Sao Paulo, Brazil
- Tax preparation outsourcing companies based in Calgary, Canada
- Tax preparation outsourcing companies based in Edmonton, Canada
- Tax preparation outsourcing companies based in Mississauga, Canada
- Tax preparation outsourcing companies based in Ottawa, Canada
Cite this list
RevenueBase Data Team. Top 25 tax preparation outsourcing companies based in the United Kingdom. Snapshot: September 29, 2026. https://revenuebase.ai/companies/tax-preparation-outsourcing-companies/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
- Tax preparation outsourcing companies based in Melbourne, Australia
- Tax preparation outsourcing companies based in Sydney, Australia
- Tax preparation outsourcing companies based in Vienna, Austria
- Tax preparation outsourcing companies based in Belo Horizonte, Brazil
- Tax preparation outsourcing companies based in Curitiba, Brazil
- Tax preparation outsourcing companies based in Porto Alegre, Brazil
Company intelligence · public preview
Top 25 tax preparation outsourcing companies based in the United Kingdom
RevenueBase records 709 matching company records for tax preparation outsourcing companies based in the United Kingdom, with 4,076 tracked contacts and 1,092 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 29, 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 tax preparation outsourcing companies 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 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | 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 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | HQ: London, United KingdomReported employees: 10001+ | London, United Kingdom | 10001+ | Exact match | 177 contacts → |
“Thoughtfully structuring and managing your tax affairs is more important than ever.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | 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 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | 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 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | DSL Accountingdslaccounting.com HQ: Leamington Spa, United KingdomReported employees: Not recorded | Leamington Spa, United Kingdom | Not recorded | Exact match | 54 contacts → |
“DSL is one of the UK's leading small business accountancy firms, helping businesses grow since 1997.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Artifin Accountantsartifinaccountants.co.uk HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 53 contacts → |
“At Artifin Accountants we strive to provide a more open experience of accounting services for business owners.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | PSB Accountants Limitedp-s-b.co.uk HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 42 contacts → |
“At PSB Accountants, we put your goals and aspirations first.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Moore Northern Home Counties Limitedmoorestephens.co.uk HQ: Stevenage, United KingdomReported employees: 51-200 | Stevenage, United Kingdom | 51-200 | Exact match | 41 contacts → |
“Moore Northern Home Counties offers a wide range of accountancy, tax and advisory services.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Riverview Portfolio LTDriverviewportfolio.co.uk HQ: Calne, United KingdomReported employees: 11-50 | Calne, United Kingdom | 11-50 | Exact match | 40 contacts → |
“Producing the annual accounts and managing the tax liability is vital for every business, but RiverView Portfolio Ltd offers more than just the number crunching.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Friend & Grant LTDfriendandgrant.co.uk HQ: Rochester, United KingdomReported employees: 11-50 | Rochester, United Kingdom | 11-50 | Exact match | 36 contacts → |
“Helping business owners be successful has been our ethos for over 25 years.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Sadofskyssadofskys.co.uk HQ: Hull, United KingdomReported employees: 11-50 | Hull, United Kingdom | 11-50 | Exact match | 23 contacts → |
“Your Accountant for Life Sadofskys provides trusted advice and first-class service to business and personal clients across the communities we serve.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Xcelentra Financial Services LTDxcelentra.com HQ: Milton Keynes, United KingdomReported employees: 51-200 | Milton Keynes, United Kingdom | 51-200 | Exact match | 23 contacts → |
“Xcelentra specializes in accounting, taxation, payroll, finance, and immigration services across the UK and Europe.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Amber Business Solutions London LTDamberbusinesssolutions.net HQ: Ruislip, United KingdomReported employees: 11-50 | Ruislip, United Kingdom | 11-50 | Exact match | 21 contacts → |
“At Amber Solutions, we make it easy for our clients to complete, manage and file corporate and individual tax returns, small to medium and enterprise level documents and much more.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | BKB Accountantsbkbaccountants.co.uk HQ: Poole, United KingdomReported employees: 11-50 | Poole, United Kingdom | 11-50 | Exact match | 20 contacts → |
“We are more than just numbers.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Kress Cooper Chartered Accountantskresscooper.com HQ: Richmond, United KingdomReported employees: 11-50 | Richmond, United Kingdom | 11-50 | Exact match | 20 contacts → |
“Kress Cooper is a key regional player in Tax, Audit and Advisory services.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Clearcut Accountingclearcutaccounting.co.uk HQ: Manchester, United KingdomReported employees: 11-50 | Manchester, United Kingdom | 11-50 | Exact match | 20 contacts → |
“Clearcut is a global team of qualified, experienced accountants and tax advisers, with expertise in tax and accounting services for Limited Companies, Contractors, Locums, Sole…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Parker Cavendishparkercavendish.co.uk HQ: Stanmore, United KingdomReported employees: 11-50 | Stanmore, United Kingdom | 11-50 | Exact match | 17 contacts → |
“Parker Cavendish provides a range of service to small and medium sized businesses and individuals.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Boobooksboobooks.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 17 contacts → |
“Boobooks offers expert accounting, tax, and business support services tailored for small businesses.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | E-Accountants Limitede-accountants.net HQ: Richmond, United KingdomReported employees: 1-10 | Richmond, United Kingdom | 1-10 | Exact match | 17 contacts → |
“We give you beautiful figures and help you achieve your financial goals.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Wallace White Accountantswallacewhite.com HQ: Glasgow, United KingdomReported employees: 11-50 | Glasgow, United Kingdom | 11-50 | Exact match | 16 contacts → |
“At Wallace White, we believe great advice should be not only accessible, but always clear and grounded in your goals.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | DAS TAX And Advisory Group US And UKdasaccounting.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 16 contacts → |
“A thriving business is always seeking to grow.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | AIS Accountants Limited, Suite 4 , 34a Waterloo Road, London, Nw2 7uhaisaccountants.co.uk HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 15 contacts → |
“AIS Accountants are business tacticians for growth providing accountancy and business services to a range of aspiring SMEs and individuals.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | H M Williams Chartered Certified Accountants And TAX Advisershmwilliams.co.uk HQ: Plympton, United KingdomReported employees: 11-50 | Plympton, United Kingdom | 11-50 | Exact match | 14 contacts → |
“H M Williams are a firm who pride themselves on an up to date, friendly service.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Minford Accountantsminford.eu HQ: York, United KingdomReported employees: 11-50 | York, United Kingdom | 11-50 | Exact match | 14 contacts → |
“Minford - More Than Just Accountants So what's different?” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 709 company matches
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Tax preparation outsourcing companies: dataset insights
September 29, 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
698 records in the displayed employee bands.
11 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 709 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 29, 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 ↗
Tax preparation outsourcing companies by metro
Questions about this company list
What does Exact match mean for tax preparation outsourcing companies?
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 tax preparation outsourcing companies did RevenueBase find based in the United Kingdom?
The saved snapshot records 709 matching company records, 4,076 tracked contacts and 1,092 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 29, 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
Tax preparation outsourcing companies by geography
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Cite this list
RevenueBase Data Team. Top 25 tax preparation outsourcing companies based in the United Kingdom. Snapshot: September 29, 2026. https://revenuebase.ai/companies/tax-preparation-outsourcing-companies/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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- Tax preparation outsourcing companies based in Melbourne, Australia
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- Tax preparation outsourcing companies based in Belo Horizonte, Brazil
- Tax preparation outsourcing companies based in Curitiba, Brazil
- Tax preparation outsourcing companies based in Porto Alegre, Brazil