Company lists · Data refreshed September 2026

Top 25 Back office accounting services based in London, United Kingdom

Name: Back office accounting services based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 380 companies tracked

RevenueBase identified 380 back office accounting services headquartered in London, United Kingdom as of September 2026 and tracks 2,604 professional contacts across them, including 635 with verified work emails. London is the largest hub.

This list covers back office accounting services headquartered in London, 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 19, 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 19, 2026 86% judged on-target in blind review

380Companies

2,604Contacts tracked

635Verified emails

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The 25 largest back office accounting services based in London, United Kingdom

Ranked by team size

Top 25 of 380 back office accounting services based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to back office accounting services: 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	SKS Business Services	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	501-1,000	322 contacts →
	Indirect evidence “At SKS, we pride ourselves on being different.” Source: RevenueBase Database · checked Sep 19, 2026
2	Stellaripe	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	58 contacts →
	Indirect evidence “We are on a mission to help accountants to grow their accountancy practice and become more profitable.” Source: RevenueBase Database · checked Sep 19, 2026
3	Artifin Accountants	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	53 contacts →
	Partial evidence “At Artifin Accountants we strive to provide a more open experience of accounting services for business owners.” Source: RevenueBase Database · checked Sep 19, 2026
4	PSB Accountants Limited	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	42 contacts →
	Indirect evidence “At PSB Accountants, we put your goals and aspirations first.” Source: RevenueBase Database · checked Sep 19, 2026
5	Glazers Chartered Accountants	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	39 contacts →
	Indirect evidence “Glazers is a well-established and progressive firm of accountants based in North West London.” Source: RevenueBase Database · checked Sep 19, 2026
6	Pennybooks Limited	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	35 contacts →
	Partial evidence “We’re PennyBooks, a refreshingly modern, London based accounting firm, supporting a broad range of clients from single director freelancers through to scale up VC backed…” Source: RevenueBase Database · checked Sep 19, 2026
7	Complete Accounting Solutions	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	33 contacts →
	Partial evidence “Complete Accounting Solutions is a firm of dedicated individuals focussed on providing small and growing companies with support on the accounts and bookkeeping activities of their…” Source: RevenueBase Database · checked Sep 19, 2026
8	BEANY	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	32 contacts →
	Indirect evidence “Beany are accountants for ambitious businesses, delivering big firm expertise without the big cost.” Source: RevenueBase Database · checked Sep 19, 2026
9	Oakford Advisors LTD	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	24 contacts →
	Strong evidence “Oakford Advisors Ltd, a Centralis Group company, is an outsourced business services firm which specialises in providing back-office support to start-up or existing companies…” Source: RevenueBase Database · checked Sep 19, 2026
10	Accnet Solutions LTD	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	21 contacts →
	Partial evidence “AccNet Solutions was formed in November 2010 by Damitha Ukuwela as a firm providing accounting and bookkeeping solutions.” Source: RevenueBase Database · checked Sep 19, 2026
11	Dirench & CO	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	18 contacts →
	Indirect evidence “Dirench & Co was founded in 2008 and has grown steadily over the past years to become a leading supplier of accountancy services in London, UK.” Source: RevenueBase Database · checked Sep 19, 2026
12	Boobooks	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	17 contacts →
	Partial evidence “Boobooks offers expert accounting, tax, and business support services tailored for small businesses.” Source: RevenueBase Database · checked Sep 19, 2026
13	Excelsious	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	16 contacts →
	Partial evidence “Excelsious provides accounting, bookkeeping and finance function outsourcing services to accountancy firms and small to medium enterprises.” Source: RevenueBase Database · checked Sep 19, 2026
14	Asesa Solutions LTD	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	16 contacts →
	Indirect evidence “With over 20+ years of experience, ASESA Solutions Ltd offers world-class financial services, including comprehensive accounts management, precise bookkeeping, strategic HR…” Source: RevenueBase Database · checked Sep 19, 2026
15	AIS Accountants Limited, Suite 4 , 34a Waterloo Road, London, Nw2 7uh	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	15 contacts →
	Indirect evidence “AIS Accountants are business tacticians for growth providing accountancy and business services to a range of aspiring SMEs and individuals.” Source: RevenueBase Database · checked Sep 19, 2026
16	Collab Accounting UK	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	14 contacts →
	Partial evidence “At Collab Accounting, we believe outsourcing should feel less like delegation and more like a partnership.” Source: RevenueBase Database · checked Sep 19, 2026
17	Silver ARC Limited	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	13 contacts →
	Partial evidence “SILVER ARC LIMITED is an accounting company based out of 1 Quality court, Chancery Lane, London WC2A 1HR” Source: RevenueBase Database · checked Sep 19, 2026
18	Chariot House LTD	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	12 contacts →
	Indirect evidence “At Chariot House, we specialize in supporting small to medium-sized organisations in managing their finances more efficiently and with greater simplicity.” Source: RevenueBase Database · checked Sep 19, 2026
19	Fresh Financials Group	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	12 contacts →
	Indirect evidence “At Fresh Financials, we offer a suite of financial operations services designed to simplify your business.” Source: RevenueBase Database · checked Sep 19, 2026
20	BM Connect Limited	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	12 contacts →
	Indirect evidence “As specialist providers of outsourced bookkeeping, management accounts and payroll solutions, we work with clients spanning a range of sectors across the various stages of the…” Source: RevenueBase Database · checked Sep 19, 2026
21	Sakura Business Solutions LTD	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	12 contacts →
	Indirect evidence “We are Entrepreneur & SME Accountants and Business Advisors, and help our Clients with how to - make the RIGHT decision(s) at the RIGHT time on their business with up to date…” Source: RevenueBase Database · checked Sep 19, 2026
22	The Infinity Group	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	10 contacts →
	Indirect evidence “The Infinity Group: Your Partner in Payroll and Accountancy Solutions At The Infinity Group, we deliver comprehensive payroll and accountancy services tailored to meet the unique…” Source: RevenueBase Database · checked Sep 19, 2026
23	CLIC	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	9 contacts →
	Indirect evidence “Own a small business?” Source: RevenueBase Database · checked Sep 19, 2026
24	Jones & Partners	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	9 contacts →
	Indirect evidence “At Jones & Partners we’re a business ally for our clients.” Source: RevenueBase Database · checked Sep 19, 2026
25	PI Accounting LTD	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	9 contacts →
	Indirect evidence “Virtual and in-house accountancy services provider for professional, media and financial services companies in London since 2010.” Source: RevenueBase Database · checked Sep 19, 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: back office accounting services. 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 back office accounting services.
Partial evidence: Its own public description names part of back office accounting services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name back office accounting services. 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 380 back office accounting services based in London, United Kingdom

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Back office accounting services based in London, United Kingdom at a glance

As of Sep 19, 2026

24.4%Verified-email coverage

6.9Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

284

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 380 companies.

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 back office accounting services, 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 London, United Kingdom whose own description of what they do matches “back office accounting services”. 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 back office accounting services), 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 back office accounting services, and records with no verified work email. Companies headquartered outside London 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, 635 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 19, 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.

Back office accounting services by metro in the United Kingdom

Back office accounting services in London380
Back office accounting services in Manchester37
Back office accounting services in Bristol30

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 back office accounting services, 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 back office accounting services are there based in London, United Kingdom?

RevenueBase identified 380 back office accounting services headquartered in London, 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?

SKS Business Services, headquartered in London, tops this list with the largest team on record.

Which city has the most back office accounting services?

London leads with 380 headquartered companies, followed by Manchester (37) and Bristol (30).

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 635 verified decision-maker contacts tracked across these 380 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 19, 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.