Company lists · Data refreshed September 2026

Top 25 Managed IT services for tax firms based in the United Kingdom

RevenueBase identified 324 company matches for managed IT services for tax firms associated with the United Kingdom as of September 2026 and tracks 2,235 professional contacts across them, including 854 with verified work emails. London is the largest hub.

This list covers company matches for managed IT services for tax firms associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 28, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 28, 2026 How this list was built
324Companies
2,235Contacts tracked
854Verified emails
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The 25 largest managed IT services for tax firms based in the United Kingdom

Ranked by team size
Top 25 of 324 company matches for managed IT services for tax firms based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Sep 28, 202610001+177 contacts →

Exact match

“Thoughtfully structuring and managing your tax affairs is more important than ever.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Sep 28, 202651-20099 contacts →

Exact match

“OryxAlign creates true alignment that delivers the right outcomes for all.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3Exact matchHounslow, United KingdomHQ recorded Sep 28, 202651-20082 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Sep 28, 202651-20075 contacts →

Exact match

“USTAXFS are the largest independent tax accounting firm in the UK & Europe specialising in US tax, including the complex specialism of US and UK cross-border tax planning.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5Exact matchMilton Keynes, United KingdomHQ recorded Sep 28, 2026201-50073 contacts →

Exact match

“Bluecube - An Ekco Company Our mission is simple.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Sep 28, 202611-5042 contacts →

Exact match

“At PSB Accountants, we put your goals and aspirations first.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7Exact matchBrentford, United KingdomHQ recorded Sep 28, 202611-5039 contacts →

Exact match

“For over 20 years, we’ve helped businesses stay productive, secure and resilient through reliable IT support, modern cloud solutions and cyber security services designed for…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8Exact matchPeterborough, United KingdomHQ recorded Sep 28, 202611-5038 contacts →

Exact match

“If you're running a business, the last thing you need is slow, unreliable IT creating expensive problems.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9Exact matchRochester, United KingdomHQ recorded Sep 28, 202611-5036 contacts →

Exact match

“Helping business owners be successful has been our ethos for over 25 years.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Sep 28, 202611-5028 contacts →

Exact match

“Lanop Business & Tax Advisors, headquartered in South West London, is dedicated to delivering a full spectrum of accounting and tax services tailored to the unique needs of each…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11Exact matchMilton Keynes, United KingdomHQ recorded Sep 28, 202651-20023 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 28, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Sep 28, 202611-5022 contacts →

Exact match

“Lanmark Limited is an IT Managed Services Provider headquartered in Dartford, Kent, serving businesses across London and Southeast England since 1993.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13Exact matchEdinburgh, United KingdomHQ recorded Sep 28, 202611-5022 contacts →

Exact match

“Texaport is an established UK-based managed service provider with a strong focus on security and customer service excellence.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14Exact matchBillericay, United KingdomHQ recorded Sep 28, 202611-5021 contacts →

Exact match

“Welcome to Sedcom Networks: Your Gateway to Seamless IT Solutions!”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15Exact matchChichester, United KingdomHQ recorded Sep 28, 202611-5021 contacts →

Exact match

“At Aztec, we deliver security‑first managed IT services that help businesses reduce risk, stay productive, and evolve with confidence.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16Exact matchSheffield, United KingdomHQ recorded Sep 28, 202611-5021 contacts →

Exact match

“Our mission is to advise, guide and support our clients to ensure they become as successful as all their hard work should make them.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17Exact matchHuddersfield, United KingdomHQ recorded Sep 28, 202611-5021 contacts →

Exact match

“At Wicresoft we believe that technology should work for your business, not against it.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18Exact matchBrighton, United KingdomHQ recorded Sep 28, 202611-5021 contacts →

Exact match

“Carden IT Services deliver a comprehensive range of managed IT services, IT support, cybersecurity and cloud solutions to companies across the UK.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19Exact matchRuislip, United KingdomHQ recorded Sep 28, 202611-5021 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 28, 2026 · View company records in RevenueBase
20Exact matchManchester, United KingdomHQ recorded Sep 28, 202611-5020 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 28, 2026 · View company records in RevenueBase
21Exact matchExeter, United KingdomHQ recorded Sep 28, 202611-5016 contacts →

Exact match

“We inspire and facilitate business success by: Harnessing the power of technology to deliver efficient, real time accounting Use management information to mitigate risk and…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22Exact matchLeigh-on-sea, United KingdomHQ recorded Sep 28, 202611-5016 contacts →

Exact match

“At Lighthouse IT, we are focused on delivering seamless and reliable services to unlock the value of technology for your business.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23Exact matchLondon, United KingdomHQ recorded Sep 28, 202611-5016 contacts →

Exact match

“A thriving business is always seeking to grow.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24Exact matchLondon, United KingdomHQ recorded Sep 28, 202611-5016 contacts →

Exact match

“At LifeinCloud, we believe IT should serve your business, not the other way around.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25Exact matchPitstone, United KingdomHQ recorded Sep 28, 202611-5015 contacts →

Exact match

“At Cloud & More, we help businesses stay secure, supported, and stress-free, without the buzzwords.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase

Showing 25 of 324 managed IT services for tax firms based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 854 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Managed IT services for tax firms based in the United Kingdom at a glance

As of Sep 28, 2026
38.2%Verified-email coverage
6.9Average contacts per company
1-10Median size (employees)
28.4%Largest-city concentration · London
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
211
11-50
96
51-200
10
201-500
3
10001+
1

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 324 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 “managed IT services for tax firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 854 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 28, 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.

Managed IT services for tax firms 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 “managed IT services for tax firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many managed IT services for tax firms are there based in the United Kingdom?

RevenueBase identified 324 company matches for managed IT services for tax firms associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

EY Private Client Services tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most managed IT services for tax firms?

London leads with 92 company records, followed by Manchester (8) and Leeds (4).

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 854 professional contacts with verified work emails tracked across these 324 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 28, 2026.

Ready to reach these companies? Verified emails and direct dials for all 324 managed IT services for tax firms based in the United Kingdom. Start with a free account, no credit card.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.