Company lists · Data refreshed September 2026

Top 25 Business accounting platforms based in the United Kingdom

Name: Business accounting platforms based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 238 companies tracked

RevenueBase identified 238 business accounting platforms headquartered in the United Kingdom as of September 2026 and tracks 5,205 professional contacts across them, including 2,454 with verified work emails. London is the largest hub.

This list covers business accounting platforms 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 27, 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 27, 2026 86% judged on-target in blind review

238Companies

5,205Contacts tracked

2,454Verified emails

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The 25 largest business accounting platforms based in the United Kingdom

Ranked by team size

Top 25 of 238 business accounting platforms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to business accounting platforms: 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	TIDE	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	1,001-5,000	2,708 contacts →
	Indirect evidence “Tide helps SMEs save time (and money) in the running of their businesses by not only offering business accounts and related banking services, but also a comprehensive set of…” Source: RevenueBase Database · checked Sep 27, 2026
2	Freeagent	Indirect evidence	Edinburgh, United KingdomHQ checked Sep 27, 2026	51-200	322 contacts →
	Indirect evidence “One product.🤳 17 years.” Source: RevenueBase Database · checked Sep 27, 2026
3	Aptitude Software	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	501-1,000	304 contacts →
	Indirect evidence “Here at Aptitude, we provide software solutions to enable deliver fully autonomous finance so our customers can drive growth, efficiency and sustainability.” Source: RevenueBase Database · checked Sep 27, 2026
4	Anna Money	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	177 contacts →
	Indirect evidence “Absolutely No Nonsense Admin The AI-powered all-in-one business account that sorts your invoicing, expenses, bookkeeping, taxes and more Currently available in the UK and Australia” Source: RevenueBase Database · checked Sep 27, 2026
5	Crunch	Partial evidence	Hove, United KingdomHQ checked Sep 27, 2026	51-200	118 contacts →
	Partial evidence “We provide accounting software, services & solutions that have a big impact on small UK businesses.” Source: RevenueBase Database · checked Sep 27, 2026
6	Debitam	Partial evidence	42-44 Bishopsgate, United KingdomHQ checked Sep 27, 2026	51-200	104 contacts →
	Partial evidence “Online Accounting Service \| Bookkeeping \| Payroll \| Personal Tax Return Filing to HMRC \| Corporation Tax Filing \| HMRC ONLINE FILING: Our aim is to help small business owners` tax…” Source: RevenueBase Database · checked Sep 27, 2026
7	kpi.com	Strong evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	87 contacts →
	Strong evidence “KPI is an all-in-one business solution providing: Accounting, Payroll, Sales, Human Resources, Project Management, Report and Document applications all in one platform according…” Source: RevenueBase Database · checked Sep 27, 2026
8	Capium	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	81 contacts →
	Partial evidence “Capium is an online accounting & practice management software, tailored specifically for accounting practices.” Source: RevenueBase Database · checked Sep 27, 2026
9	Xledger UK	Indirect evidence	Bristol, United KingdomHQ checked Sep 27, 2026	201-500	65 contacts →
	Indirect evidence “Xledger is a leading provider of cloud-based finance software.” Source: RevenueBase Database · checked Sep 27, 2026
10	The Accountancy Partnership	Partial evidence	Wirral, United KingdomHQ checked Sep 27, 2026	51-200	62 contacts →
	Partial evidence “We offer online accounting services which simplify tax and finances for small businesses, by providing a fresh alternative to old-school high street accountants.” Source: RevenueBase Database · checked Sep 27, 2026
11	NOMI	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	62 contacts →
	Partial evidence “Nomi is the ultimate cloud accounting suite built for accountants and bookkeepers.” Source: RevenueBase Database · checked Sep 27, 2026
12	LIGHT	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	56 contacts →
	Indirect evidence “Light is the new way to run multinational finances for modern technology companies.” Source: RevenueBase Database · checked Sep 27, 2026
13	Iris Accountancy	Partial evidence	Slough, United KingdomHQ checked Sep 27, 2026	1,001-5,000	42 contacts →
	Partial evidence “IRIS is a long-established industry leader in accounting software and services for accountants and bookkeepers.” Source: RevenueBase Database · checked Sep 27, 2026
14	Pegasus Software	Partial evidence	Kettering, United KingdomHQ checked Sep 27, 2026	51-200	41 contacts →
	Partial evidence “Pegasus Software is one of the UK's leading suppliers of accounting software, cloud accounting software, business solutions and payroll software and has been for over 30 years.” Source: RevenueBase Database · checked Sep 27, 2026
15	Ascendant	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	201-500	40 contacts →
	Partial evidence “Accounting.” Source: RevenueBase Database · checked Sep 27, 2026
16	Acting Office	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	35 contacts →
	Partial evidence “At Acting Office we deliver a fully integrated software platform designed for modern accountancy practices that want precision, efficiency and complete visibility across their…” Source: RevenueBase Database · checked Sep 27, 2026
17	Countingup	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	33 contacts →
	Indirect evidence “Forget everything you know about business banking.” Source: RevenueBase Database · checked Sep 27, 2026
18	EMBER	Strong evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	32 contacts →
	Strong evidence “Ember is a specialist accounting and tax software platform and was acquired by Starling Bank in 2025.” Source: RevenueBase Database · checked Sep 27, 2026
19	Accounts ETC	Indirect evidence	Cirencester, United KingdomHQ checked Sep 27, 2026	1-10	30 contacts →
	Indirect evidence “We found that there was often a breakdown in service between your bookkeeper and your accountant and that more often than not the accountant was spending a majority of their time…” Source: RevenueBase Database · checked Sep 27, 2026
20	Addition	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	27 contacts →
	Indirect evidence “At Addition Finance, we're revolutionising the landscape of business finance on a global scale.” Source: RevenueBase Database · checked Sep 27, 2026
21	Clever Accounts LTD	Indirect evidence	Leeds, United KingdomHQ checked Sep 27, 2026	11-50	27 contacts →
	Indirect evidence “More and more services have moved to an online or digital environment, as the easiest and best way of accessing them, allowing individuals and businesses greater control over…” Source: RevenueBase Database · checked Sep 27, 2026
22	Aqilla	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	26 contacts →
	Partial evidence “Cloud-native finance and accounting software for multi-entity and multi-currency organisations.” Source: RevenueBase Database · checked Sep 27, 2026
23	UWM Accountants	Indirect evidence	Leeds, United KingdomHQ checked Sep 27, 2026	11-50	20 contacts →
	Indirect evidence “Leeds cloud accountants that care.” Source: RevenueBase Database · checked Sep 27, 2026
24	Ookkee	Indirect evidence	Poole, United KingdomHQ checked Sep 27, 2026	1-10	18 contacts →
	Indirect evidence “At Ookkee we are aiming to get business owners back in touch with the numbers.” Source: RevenueBase Database · checked Sep 27, 2026
25	Clear Books	Indirect evidence	West Kensington, United KingdomHQ checked Sep 27, 2026	11-50	17 contacts →
	Indirect evidence “Clear Books is a small business supporting small businesses.” Source: RevenueBase Database · checked Sep 27, 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: business accounting platforms. 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 business accounting platforms.
Partial evidence: Its own public description names part of business accounting platforms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name business accounting platforms. 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 238 business accounting platforms based in the United Kingdom

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Business accounting platforms based in the United Kingdom at a glance

As of Sep 27, 2026

47.1%Verified-email coverage

21.9Average contacts per company

1-10Median size (employees)

31.9%Largest-city concentration · London

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

165

11-50

51-200

201-500

501-1,000

1,001-5,000

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 238 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 business accounting platforms, 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 “business accounting platforms”. 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 business accounting platforms), 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 business accounting platforms, 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, 2,454 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 27, 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.

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 business accounting platforms, 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 business accounting platforms are there based in the United Kingdom?

RevenueBase identified 238 business accounting platforms 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?

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

Which city has the most business accounting platforms?

London leads with 76 headquartered companies, followed by Bristol (7) and Nottingham (6).

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 2,454 verified decision-maker contacts tracked across these 238 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 27, 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.