Company lists · Data refreshed September 2026
Top 25 Professional service companies based in the United Kingdom
RevenueBase identified 907 company matches for professional service companies associated with the United Kingdom as of September 2026 and tracks 13,896 professional contacts across them, including 5,749 with verified work emails. London is the largest hub.
This list covers company matches for professional service 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 20, 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 professional service companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,322 contacts → | ||||
Exact match “We're the business people turn to for professional services everywhere across the UK.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 2 | 702 contacts → | ||||
Exact match “We are a fast-growing firm of accountants and business advisers based in London’s Canary Wharf, Leeds and in Manchester.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 3 | 602 contacts → | ||||
Exact match “We guide our clients, colleagues and communities to a brighter future.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 4 | 579 contacts → | ||||
Exact match “Armstrong Watson has been advising and protecting clients across the North of England and Scotland since 1867.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 5 | 505 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 6 | 379 contacts → | ||||
Exact match “Welcome to the new era of accountancy.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 7 | 258 contacts → | ||||
Exact match “Ellisons is one of the region’s oldest, most established and fastest growing firms.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 8 | 244 contacts → | ||||
Exact match “EST are a multi service professional practice offering HR Consultancy, Accountancy & Tax advice and Commercial Finance.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 9 | 171 contacts → | ||||
Exact match “Our pioneering integrated approach to professional services cuts through the complicated layers of the legal and accountancy world to give you straightforward joined-up advice and…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 10 | 158 contacts → | ||||
Exact match “Welcome to the AMS Group, established in 1982, the AMS Group is a national full-service professional services firm specialising in creating value for mid-market clients.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 11 | 102 contacts → | ||||
Exact match “With more than 2,500 people spanning our office network, we provide an extensive spectrum of personalised services, encompassing accounting, audit, tax, advisory, and business…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 12 | 97 contacts → | ||||
Exact match “K3 Capital Group is a professional services firm providing advisory services to SMEs throughout the UK and overseas.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 13 | 93 contacts → | ||||
Exact match “BDO NI specialises in helping businesses, whether start-ups or multinationals, to grow.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 14 | 92 contacts → | ||||
Exact match “Baker Tilly is a leading professional services firm which provides a range of accounting and advisory services to a broad spectrum of clients, from public companies to…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 15 | 88 contacts → | ||||
Exact match “Founded in 2001 by lawyers, Global BPO provides bespoke legal and business services to law firms, professional service organisations and other businesses.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 16 | 82 contacts → | ||||
Exact match “Beavis Morgan is part of the Kinbrook Group, a people-first accounting, wealth management, legal and professional advisory services group.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 17 | 73 contacts → | ||||
Exact match “MG Group is a multi-disciplinary practice providing accounting, tax, audit, legal and business consulting services.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 18 | 71 contacts → | ||||
Exact match “Sharma & Co operates from offices in Birmingham, London and Manchester delivering practical and cost effective advice.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 19 | 52 contacts → | ||||
Exact match “Our integrated approach brings together accountancy and financial planning to maximise your financial performance.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 20 | 51 contacts → | ||||
Exact match “What Keeps You Awake At Night?” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 21 | 47 contacts → | ||||
Exact match “At Moore, our purpose is to help people thrive – our clients, our people and the communities they live and work in.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 22 | 47 contacts → | ||||
Exact match “Goldschmidt & Howland was established way back in the 19th century and for a company with such a long history, our attitudes are surprisingly modern.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 23 | 46 contacts → | ||||
Exact match “We proudly announce that WMT has joined forces with Moore Kingston Smith, creating a stronger, unified team with shared values and a commitment to excellence.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 24 | 42 contacts → | ||||
Exact match “Diacron Group provides accounting, tax and corporate services.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 25 | 42 contacts → | ||||
Exact match “Established 40 years ago, Tunbridge Wells-based CooperBurnett is focused on building long-term relationships with our clients, based around excellent communication and exceptional…” Recorded in the RevenueBase company graph · Sep 20, 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 “professional service 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 907 professional service companies based in the United Kingdom
See the full list, filter by size, metro and specialty, and access 5,749 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Professional service companies based in the United Kingdom at a glance
As of Sep 20, 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 907 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 “professional service 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 5,749 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 20, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “professional service companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many professional service companies are there based in the United Kingdom?
RevenueBase identified 907 company matches for professional service 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?
Knights tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most professional service companies?
London leads with 272 company records, followed by Manchester (18) 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 5,749 professional contacts with verified work emails tracked across these 907 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 20, 2026.
Ready to reach these companies? Verified emails and direct dials for all 907 professional service companies based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Professional service companies by geography
- Professional service companies based in Buenos Aires, Argentina
- Professional service companies based in Belo Horizonte, Brazil
- Professional service companies based in Campinas, Brazil
- Professional service companies based in Curitiba, Brazil
- Professional service companies based in Fortaleza, Brazil
- Professional service companies based in Porto Alegre, Brazil
- Professional service companies based in Recife, Brazil
- Professional service companies based in Rio De Janeiro, Brazil
- Professional service companies based in Salvador, Brazil
- Professional service companies based in Sao Paulo, Brazil
- Professional service companies based in Calgary, Canada
- Professional service companies based in Toronto, 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
- Professional service companies based in Buenos Aires, Argentina
- Professional service companies based in Belo Horizonte, Brazil
- Professional service companies based in Campinas, Brazil
- Professional service companies based in Curitiba, Brazil
- Professional service companies based in Fortaleza, Brazil
- Professional service companies based in Porto Alegre, Brazil
Company intelligence · public preview
Top 25 professional service 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 907 matching company records for professional service companies based in the United Kingdom, with 13,896 tracked contacts and 5,749 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 20, 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 professional service 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 | Knightsknightsplc.com HQ: Newcastle-under-lyme, United KingdomReported employees: 1,001-5,000 | Newcastle-under-lyme, United Kingdom | 1,001-5,000 | Exact match | 1,322 contacts → |
“We're the business people turn to for professional services everywhere across the UK.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  PKF Littlejohnpkf-l.comHQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 702 contacts → |
“We are a fast-growing firm of accountants and business advisers based in London’s Canary Wharf, Leeds and in Manchester.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Kreston Reeveskrestonreeves.comHQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 602 contacts → |
“We guide our clients, colleagues and communities to a brighter future.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Armstrong Watsonarmstrongwatson.co.ukHQ: Carlisle, United KingdomReported employees: 501-1,000 | Carlisle, United Kingdom | 501-1,000 | Exact match | 579 contacts → |
“Armstrong Watson has been advising and protecting clients across the North of England and Scotland since 1867.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Mazars In The UKmazars.co.ukHQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 505 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 6 |  Gravitagravita.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 379 contacts → |
“Welcome to the new era of accountancy.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Ellisonsellisons.com HQ: Colchester, United KingdomReported employees: 201-500 | Colchester, United Kingdom | 201-500 | Exact match | 258 contacts → |
“Ellisons is one of the region’s oldest, most established and fastest growing firms.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  ESTest-group.co.ukHQ: Groesfaen, United KingdomReported employees: Not recorded | Groesfaen, United Kingdom | Not recorded | Exact match | 244 contacts → |
“EST are a multi service professional practice offering HR Consultancy, Accountancy & Tax advice and Commercial Finance.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Oury Clarkouryclark.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 171 contacts → |
“Our pioneering integrated approach to professional services cuts through the complicated layers of the legal and accountancy world to give you straightforward joined-up advice and…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  AMS Groupgroupams.co.ukHQ: Manchester, United KingdomReported employees: 51-200 | Manchester, United Kingdom | 51-200 | Exact match | 158 contacts → |
“Welcome to the AMS Group, established in 1982, the AMS Group is a national full-service professional services firm specialising in creating value for mid-market clients.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Xeinadin Previously Silver Levenexeinadin.comHQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 102 contacts → |
“With more than 2,500 people spanning our office network, we provide an extensive spectrum of personalised services, encompassing accounting, audit, tax, advisory, and business…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | K3 Capital Groupk3capitalgroup.com HQ: Manchester, United KingdomReported employees: 501-1,000 | Manchester, United Kingdom | 501-1,000 | Exact match | 97 contacts → |
“K3 Capital Group is a professional services firm providing advisory services to SMEs throughout the UK and overseas.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  BDO Northern Irelandbdoni.comHQ: Belfast, United KingdomReported employees: 51-200 | Belfast, United Kingdom | 51-200 | Exact match | 93 contacts → |
“BDO NI specialises in helping businesses, whether start-ups or multinationals, to grow.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Baker Tilly Business Services Limitedbakertilly.co.uk HQ: Marlow, United KingdomReported employees: 1,001-5,000 | Marlow, United Kingdom | 1,001-5,000 | Exact match | 92 contacts → |
“Baker Tilly is a leading professional services firm which provides a range of accounting and advisory services to a broad spectrum of clients, from public companies to…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Global BPOglobalbpo.co.ukHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 88 contacts → |
“Founded in 2001 by lawyers, Global BPO provides bespoke legal and business services to law firms, professional service organisations and other businesses.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Beavis Morganbeavismorgan.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 82 contacts → |
“Beavis Morgan is part of the Kinbrook Group, a people-first accounting, wealth management, legal and professional advisory services group.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  MG Groupmggroup.co.ukHQ: Harrow, United KingdomReported employees: 11-50 | Harrow, United Kingdom | 11-50 | Exact match | 73 contacts → |
“MG Group is a multi-disciplinary practice providing accounting, tax, audit, legal and business consulting services.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Sharma & COsharmaandco.com HQ: Birmingham, United KingdomReported employees: Not recorded | Birmingham, United Kingdom | Not recorded | Exact match | 71 contacts → |
“Sharma & Co operates from offices in Birmingham, London and Manchester delivering practical and cost effective advice.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Prydisprydis.comHQ: Clyst St Mary, United KingdomReported employees: 51-200 | Clyst St Mary, United Kingdom | 51-200 | Exact match | 52 contacts → |
“Our integrated approach brings together accountancy and financial planning to maximise your financial performance.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  AD Valorem Groupadvaloremgroup.ukHQ: Milton Keynes, United KingdomReported employees: 51-200 | Milton Keynes, United Kingdom | 51-200 | Exact match | 51 contacts → |
“What Keeps You Awake At Night?” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Moore East Midlandsmooreeastmidlands.co.ukHQ: Corby, United KingdomReported employees: 51-200 | Corby, United Kingdom | 51-200 | Exact match | 47 contacts → |
“At Moore, our purpose is to help people thrive – our clients, our people and the communities they live and work in.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Goldschmidt & Howlandg-h.co.uk HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 47 contacts → |
“Goldschmidt & Howland was established way back in the 19th century and for a company with such a long history, our attitudes are surprisingly modern.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Moore Kingston Smith Herts Beds Bucksmooreks.co.ukHQ: St Albans, United KingdomReported employees: 51-200 | St Albans, United Kingdom | 51-200 | Exact match | 46 contacts → |
“We proudly announce that WMT has joined forces with Moore Kingston Smith, creating a stronger, unified team with shared values and a commitment to excellence.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Diacron Groupdiacrongroup.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 42 contacts → |
“Diacron Group provides accounting, tax and corporate services.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Cooperburnett LLPcooperburnett.comHQ: Tunbridge Wells, United KingdomReported employees: 11-50 | Tunbridge Wells, United Kingdom | 11-50 | Exact match | 42 contacts → |
“Established 40 years ago, Tunbridge Wells-based CooperBurnett is focused on building long-term relationships with our clients, based around excellent communication and exceptional…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 907 company matches
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Professional service companies: dataset insights
September 20, 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
889 records in the displayed employee bands.
18 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 907 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 20, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for professional service 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 professional service companies did RevenueBase find based in the United Kingdom?
The saved snapshot records 907 matching company records, 13,896 tracked contacts and 5,749 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 20, 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
Professional service companies by geography
- Professional service companies based in Buenos Aires, Argentina
- Professional service companies based in Belo Horizonte, Brazil
- Professional service companies based in Campinas, Brazil
- Professional service companies based in Curitiba, Brazil
- Professional service companies based in Fortaleza, Brazil
- Professional service companies based in Porto Alegre, Brazil
- Professional service companies based in Recife, Brazil
- Professional service companies based in Rio De Janeiro, Brazil
- Professional service companies based in Salvador, Brazil
- Professional service companies based in Sao Paulo, Brazil
- Professional service companies based in Calgary, Canada
- Professional service companies based in Toronto, Canada
Cite this list
RevenueBase Data Team. Top 25 professional service companies based in the United Kingdom. Snapshot: September 20, 2026. https://revenuebase.ai/companies/professional-service-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
- Professional service companies based in Buenos Aires, Argentina
- Professional service companies based in Belo Horizonte, Brazil
- Professional service companies based in Campinas, Brazil
- Professional service companies based in Curitiba, Brazil
- Professional service companies based in Fortaleza, Brazil
- Professional service companies based in Porto Alegre, Brazil
Company intelligence · public preview
Top 25 professional service companies based in the United Kingdom
RevenueBase records 907 matching company records for professional service companies based in the United Kingdom, with 13,896 tracked contacts and 5,749 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 20, 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 professional service 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 | Knightsknightsplc.com HQ: Newcastle-under-lyme, United KingdomReported employees: 1,001-5,000 | Newcastle-under-lyme, United Kingdom | 1,001-5,000 | Exact match | 1,322 contacts → |
“We're the business people turn to for professional services everywhere across the UK.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | PKF Littlejohnpkf-l.com HQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 702 contacts → |
“We are a fast-growing firm of accountants and business advisers based in London’s Canary Wharf, Leeds and in Manchester.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Kreston Reeveskrestonreeves.com HQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 602 contacts → |
“We guide our clients, colleagues and communities to a brighter future.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Armstrong Watsonarmstrongwatson.co.uk HQ: Carlisle, United KingdomReported employees: 501-1,000 | Carlisle, United Kingdom | 501-1,000 | Exact match | 579 contacts → |
“Armstrong Watson has been advising and protecting clients across the North of England and Scotland since 1867.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Mazars In The UKmazars.co.uk HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 505 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 6 | Gravitagravita.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 379 contacts → |
“Welcome to the new era of accountancy.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Ellisonsellisons.com HQ: Colchester, United KingdomReported employees: 201-500 | Colchester, United Kingdom | 201-500 | Exact match | 258 contacts → |
“Ellisons is one of the region’s oldest, most established and fastest growing firms.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | ESTest-group.co.uk HQ: Groesfaen, United KingdomReported employees: Not recorded | Groesfaen, United Kingdom | Not recorded | Exact match | 244 contacts → |
“EST are a multi service professional practice offering HR Consultancy, Accountancy & Tax advice and Commercial Finance.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Oury Clarkouryclark.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 171 contacts → |
“Our pioneering integrated approach to professional services cuts through the complicated layers of the legal and accountancy world to give you straightforward joined-up advice and…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | AMS Groupgroupams.co.uk HQ: Manchester, United KingdomReported employees: 51-200 | Manchester, United Kingdom | 51-200 | Exact match | 158 contacts → |
“Welcome to the AMS Group, established in 1982, the AMS Group is a national full-service professional services firm specialising in creating value for mid-market clients.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Xeinadin Previously Silver Levenexeinadin.com HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 102 contacts → |
“With more than 2,500 people spanning our office network, we provide an extensive spectrum of personalised services, encompassing accounting, audit, tax, advisory, and business…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | K3 Capital Groupk3capitalgroup.com HQ: Manchester, United KingdomReported employees: 501-1,000 | Manchester, United Kingdom | 501-1,000 | Exact match | 97 contacts → |
“K3 Capital Group is a professional services firm providing advisory services to SMEs throughout the UK and overseas.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | BDO Northern Irelandbdoni.com HQ: Belfast, United KingdomReported employees: 51-200 | Belfast, United Kingdom | 51-200 | Exact match | 93 contacts → |
“BDO NI specialises in helping businesses, whether start-ups or multinationals, to grow.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Baker Tilly Business Services Limitedbakertilly.co.uk HQ: Marlow, United KingdomReported employees: 1,001-5,000 | Marlow, United Kingdom | 1,001-5,000 | Exact match | 92 contacts → |
“Baker Tilly is a leading professional services firm which provides a range of accounting and advisory services to a broad spectrum of clients, from public companies to…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Global BPOglobalbpo.co.uk HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 88 contacts → |
“Founded in 2001 by lawyers, Global BPO provides bespoke legal and business services to law firms, professional service organisations and other businesses.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Beavis Morganbeavismorgan.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 82 contacts → |
“Beavis Morgan is part of the Kinbrook Group, a people-first accounting, wealth management, legal and professional advisory services group.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | MG Groupmggroup.co.uk HQ: Harrow, United KingdomReported employees: 11-50 | Harrow, United Kingdom | 11-50 | Exact match | 73 contacts → |
“MG Group is a multi-disciplinary practice providing accounting, tax, audit, legal and business consulting services.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Sharma & COsharmaandco.com HQ: Birmingham, United KingdomReported employees: Not recorded | Birmingham, United Kingdom | Not recorded | Exact match | 71 contacts → |
“Sharma & Co operates from offices in Birmingham, London and Manchester delivering practical and cost effective advice.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Prydisprydis.com HQ: Clyst St Mary, United KingdomReported employees: 51-200 | Clyst St Mary, United Kingdom | 51-200 | Exact match | 52 contacts → |
“Our integrated approach brings together accountancy and financial planning to maximise your financial performance.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | AD Valorem Groupadvaloremgroup.uk HQ: Milton Keynes, United KingdomReported employees: 51-200 | Milton Keynes, United Kingdom | 51-200 | Exact match | 51 contacts → |
“What Keeps You Awake At Night?” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Moore East Midlandsmooreeastmidlands.co.uk HQ: Corby, United KingdomReported employees: 51-200 | Corby, United Kingdom | 51-200 | Exact match | 47 contacts → |
“At Moore, our purpose is to help people thrive – our clients, our people and the communities they live and work in.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Goldschmidt & Howlandg-h.co.uk HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 47 contacts → |
“Goldschmidt & Howland was established way back in the 19th century and for a company with such a long history, our attitudes are surprisingly modern.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Moore Kingston Smith Herts Beds Bucksmooreks.co.uk HQ: St Albans, United KingdomReported employees: 51-200 | St Albans, United Kingdom | 51-200 | Exact match | 46 contacts → |
“We proudly announce that WMT has joined forces with Moore Kingston Smith, creating a stronger, unified team with shared values and a commitment to excellence.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Diacron Groupdiacrongroup.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 42 contacts → |
“Diacron Group provides accounting, tax and corporate services.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Cooperburnett LLPcooperburnett.com HQ: Tunbridge Wells, United KingdomReported employees: 11-50 | Tunbridge Wells, United Kingdom | 11-50 | Exact match | 42 contacts → |
“Established 40 years ago, Tunbridge Wells-based CooperBurnett is focused on building long-term relationships with our clients, based around excellent communication and exceptional…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 907 company matches
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Professional service companies: dataset insights
September 20, 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
889 records in the displayed employee bands.
18 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 907 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 20, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for professional service 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 professional service companies did RevenueBase find based in the United Kingdom?
The saved snapshot records 907 matching company records, 13,896 tracked contacts and 5,749 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 20, 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
Professional service companies by geography
- Professional service companies based in Buenos Aires, Argentina
- Professional service companies based in Belo Horizonte, Brazil
- Professional service companies based in Campinas, Brazil
- Professional service companies based in Curitiba, Brazil
- Professional service companies based in Fortaleza, Brazil
- Professional service companies based in Porto Alegre, Brazil
- Professional service companies based in Recife, Brazil
- Professional service companies based in Rio De Janeiro, Brazil
- Professional service companies based in Salvador, Brazil
- Professional service companies based in Sao Paulo, Brazil
- Professional service companies based in Calgary, Canada
- Professional service companies based in Toronto, Canada
Cite this list
RevenueBase Data Team. Top 25 professional service companies based in the United Kingdom. Snapshot: September 20, 2026. https://revenuebase.ai/companies/professional-service-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
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- Lists A-Z
- New lists
- Professional service companies based in Buenos Aires, Argentina
- Professional service companies based in Belo Horizonte, Brazil
- Professional service companies based in Campinas, Brazil
- Professional service companies based in Curitiba, Brazil
- Professional service companies based in Fortaleza, Brazil
- Professional service companies based in Porto Alegre, Brazil