Company lists · Data refreshed September 2026

Top 25 Cpa firm outsourcing companies based in the United Kingdom

Name: Cpa firm outsourcing companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 3,560 companies tracked

RevenueBase identified 3,560 cpa firm outsourcing companies headquartered in the United Kingdom as of September 2026 and tracks 28,263 professional contacts across them, including 10,288 with verified work emails and 1,057 with mobile numbers. London is the largest hub.

This list covers cpa firm outsourcing companies headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 24, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 24, 2026 86% judged on-target in blind review

3,560Companies

28,263Contacts tracked

10,288Verified emails

1,057Mobile numbers

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The 25 largest cpa firm outsourcing companies based in the United Kingdom

Ranked by team size

Top 25 of 3,560 cpa firm outsourcing companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 24, 2026. RevenueBase Smart Search rates how each company's information relates to cpa firm outsourcing companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	PKF Littlejohn	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	501-1,000	702 contacts →
	Indirect evidence “We are a fast-growing firm of accountants and business advisers based in London’s Canary Wharf, Leeds and in Manchester.” Source: RevenueBase Database · checked Sep 24, 2026
2	Pkf-Francis Clark Chartered Accountants & Business Advisers	Indirect evidence	Exeter, United KingdomHQ checked Sep 24, 2026	501-1,000	700 contacts →
	Indirect evidence “Any good accountancy firm can help with your finance, audit, and tax.” Source: RevenueBase Database · checked Sep 24, 2026
3	Outbooks	Partial evidence	Harrow, United KingdomHQ checked Sep 24, 2026	201-500	477 contacts →
	Partial evidence “Outbooks is a leading provider of outsourcing services to accounting and bookkeeping firms.” Source: RevenueBase Database · checked Sep 24, 2026
4	Gravita	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	201-500	379 contacts →
	Indirect evidence “Welcome to the new era of accountancy.” Source: RevenueBase Database · checked Sep 24, 2026
5	SKS Business Services	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	501-1,000	322 contacts →
	Indirect evidence “At SKS, we pride ourselves on being different.” Source: RevenueBase Database · checked Sep 24, 2026
6	GI Outsourcing	Partial evidence	London, United KingdomHQ checked Sep 24, 2026	201-500	311 contacts →
	Partial evidence “GI Outsourcing is a UK-based accountants outsourcing firm.” Source: RevenueBase Database · checked Sep 24, 2026
7	James Cowper Kreston	Indirect evidence	Newbury, United KingdomHQ checked Sep 24, 2026	51-200	235 contacts →
	Indirect evidence “James Cowper Kreston is a leading firm of accountants and business advisers, with offices in Newbury, Oxford, London, Reading and Southampton.” Source: RevenueBase Database · checked Sep 24, 2026
8	Carpenter Box, Part Of The Sumer Group	Indirect evidence	Worthing, United KingdomHQ checked Sep 24, 2026	201-500	198 contacts →
	Indirect evidence “Award-winning Carpenter Box is a leading accountancy firm in the South-East, recognised for innovation, client service, and team excellence.” Source: RevenueBase Database · checked Sep 24, 2026
9	Galloways Accounting	Indirect evidence	Brighton, United KingdomHQ checked Sep 24, 2026	201-500	187 contacts →
	Indirect evidence “Galloways is the fastest growing accounting services firm in Sussex.” Source: RevenueBase Database · checked Sep 24, 2026
10	EQ Accountants, Part Of The Sumer Group	Indirect evidence	Dundee, United KingdomHQ checked Sep 24, 2026	201-500	167 contacts →
	Indirect evidence “In 2023, EQ Accountants became part of Sumer – a collaboration of renowned regional accountancy practices with a shared vision to champion local small to medium-sized enterprises.” Source: RevenueBase Database · checked Sep 24, 2026
11	Scrutton Bland, Part Of The Sumer Group	Indirect evidence	Ipswich, United KingdomHQ checked Sep 24, 2026	201-500	164 contacts →
	Indirect evidence “From offices in Bury St Edmunds, Colchester, Norwich and Ipswich, Scrutton Bland serves a range of clients from small owner-managed businesses to large corporate organisations and…” Source: RevenueBase Database · checked Sep 24, 2026
12	Ormerod Rutter Chartered Accountants	Indirect evidence	Droitwich, United KingdomHQ checked Sep 24, 2026	51-200	151 contacts →
	Indirect evidence “For 40 years, Ormerod Rutter have offered the specialist hands-on support that clients need to handle all of their tax, business and financial affairs.” Source: RevenueBase Database · checked Sep 24, 2026
13	Burgess Hodgson	Indirect evidence	Canterbury, United KingdomHQ checked Sep 24, 2026	51-200	140 contacts →
	Indirect evidence “Burgess Hodgson are a Kent based accountancy firm with the skills and expertise to rival any other accountancy firm in the UK.” Source: RevenueBase Database · checked Sep 24, 2026
14	HSJ Accountants, Business & TAX Advisors	Indirect evidence	Newport, United KingdomHQ checked Sep 24, 2026	51-200	134 contacts →
	Indirect evidence “Award winning accountants & tax advisors based in Newport, South Wales.” Source: RevenueBase Database · checked Sep 24, 2026
15	Accounts And Legal	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	11-50	133 contacts →
	Indirect evidence “Traditional accountants do a great job of the numbers, but that's often as far as the service goes.” Source: RevenueBase Database · checked Sep 24, 2026
16	Ellacotts Accountants	Indirect evidence	Banbury, United KingdomHQ checked Sep 24, 2026	51-200	120 contacts →
	Indirect evidence “Ellacotts is one of the largest independent accounting and business advisory firms in the UK and is ranked as a Top 100 Accountancy Firm by Accountancy Age.” Source: RevenueBase Database · checked Sep 24, 2026
17	Whitings Llp, Chartered Accountants	Indirect evidence	East Anglia, United KingdomHQ checked Sep 24, 2026	51-200	114 contacts →
	Indirect evidence “Whitings LLP are a firm of general practice chartered accountants, the partners of which are predominantly members of the Institute of Chartered Accountants in England and Wales.” Source: RevenueBase Database · checked Sep 24, 2026
18	Hentons	Indirect evidence	Leeds, United KingdomHQ checked Sep 24, 2026	51-200	109 contacts →
	Indirect evidence “We have over 40 years of experience and pride ourselves on understanding our clients, their businesses, and the issues they face, no matter how big or small.” Source: RevenueBase Database · checked Sep 24, 2026
19	Initor Global UK	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	51-200	108 contacts →
	Indirect evidence “As attention turns to the new fiscal year, accountants across the UK are finalising plans to boost growth and productivity and improve profitability.” Source: RevenueBase Database · checked Sep 24, 2026
20	FLB Accountants LLP	Indirect evidence	Wokingham, United KingdomHQ checked Sep 24, 2026	51-200	107 contacts →
	Indirect evidence “FLB is a firm of accountants providing core accounting services to a range of clients from start-ups, owner-managed businesses and private clients, to large corporates and…” Source: RevenueBase Database · checked Sep 24, 2026
21	Xeinadin Previously Silver Levene	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	1,001-5,000	102 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 24, 2026
22	SJD Accountancy	Indirect evidence	Hemel Hempstead, United KingdomHQ checked Sep 24, 2026	501-1,000	102 contacts →
	Indirect evidence “SJD is now Caroola Accountancy!” Source: RevenueBase Database · checked Sep 24, 2026
23	Dyke Yaxley Chartered Accountants	Indirect evidence	Shrewsbury, United KingdomHQ checked Sep 24, 2026	51-200	100 contacts →
	Indirect evidence “Dyke Yaxley is a respected accounting firm located in Shropshire.” Source: RevenueBase Database · checked Sep 24, 2026
24	Rayner Essex LLP	Indirect evidence	St Albans, United KingdomHQ checked Sep 24, 2026	51-200	98 contacts →
	Indirect evidence “At Rayner Essex, we believe your accountant should do a lot more than just report on how your business is doing - he or she should help you identify opportunities to improve your…” Source: RevenueBase Database · checked Sep 24, 2026
25	Affinity Outsourcing Limited	Partial evidence	Wembley, United KingdomHQ checked Sep 24, 2026	51-200	96 contacts →
	Partial evidence “Affinity Outsourcing is an accountancy outsourcing company that specialises in outsourcing for Accounting Practices.” Source: RevenueBase Database · checked Sep 24, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: cpa firm outsourcing companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names cpa firm outsourcing companies.
Partial evidence: Its own public description names part of cpa firm outsourcing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cpa firm outsourcing companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 3,560 cpa firm outsourcing companies based in the United Kingdom

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Cpa firm outsourcing companies based in the United Kingdom at a glance

As of Sep 24, 2026

36.4%Verified-email coverage

3.7%Mobile-number coverage

7.9Average contacts per company

1-10Median size (employees)

18.3%Largest-city concentration · London

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

2,442

11-50

930

51-200

112

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 27.0d

7,7240–30

2,39631–60

12961–90

1690–180

23180+

Company record updated

Median 90.0d

00–30

1,29431–60

14,02661–90

11,25190–180

1,692180+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among cpa firm outsourcing companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United Kingdom whose own description of what they do matches “cpa firm outsourcing companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names cpa firm outsourcing companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among cpa firm outsourcing companies, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 10,288 across the full list. 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 24, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Cpa firm outsourcing companies by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names cpa firm outsourcing companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many cpa firm outsourcing companies are there based in the United Kingdom?

RevenueBase identified 3,560 cpa firm outsourcing companies headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

PKF Littlejohn, headquartered in London, tops this list with the largest team on record.

Which city has the most cpa firm outsourcing companies?

London leads with 651 headquartered companies, followed by Manchester (79) and Birmingham (63).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 10,288 verified decision-maker contacts tracked across these 3,560 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 24, 2026.

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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 Smart Search, 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.