Company lists · Data refreshed September 2026

Top 25 Software financial accounting firms based in the United Kingdom

Name: Software financial accounting firms based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 207 companies tracked

RevenueBase identified 207 software financial accounting firms headquartered in the United Kingdom as of September 2026 and tracks 3,917 professional contacts across them, including 1,851 with verified work emails. London is the largest hub.

This list covers software financial accounting firms 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 21, 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 21, 2026 86% judged on-target in blind review

207Companies

3,917Contacts tracked

1,851Verified emails

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The 25 largest software financial accounting firms based in the United Kingdom

Ranked by team size

Top 25 of 207 software financial accounting firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to software financial accounting firms: 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	Iris Software Group	Partial evidence	Slough, United KingdomHQ checked Sep 21, 2026	1,001-5,000	2,218 contacts →
	Partial evidence “IRIS Software Group is a leading business software and services provider, one of the UK’s largest privately held software companies.” Source: RevenueBase Database · checked Sep 21, 2026
2	Freeagent	Indirect evidence	Edinburgh, United KingdomHQ checked Sep 21, 2026	51-200	322 contacts →
	Indirect evidence “One product.🤳 17 years.” Source: RevenueBase Database · checked Sep 21, 2026
3	Aptitude Software	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	501-1,000	304 contacts →
	Partial 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 21, 2026
4	Crunch	Strong evidence	Hove, United KingdomHQ checked Sep 21, 2026	51-200	118 contacts →
	Strong evidence “We provide accounting software, services & solutions that have a big impact on small UK businesses.” Source: RevenueBase Database · checked Sep 21, 2026
5	Taxcalc	Partial evidence	Wokingham, United KingdomHQ checked Sep 21, 2026	51-200	101 contacts →
	Partial evidence “The complete tax and accountancy practice software suite, powered by a single database.” Source: RevenueBase Database · checked Sep 21, 2026
6	kpi.com	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	87 contacts →
	Partial 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 21, 2026
7	Pegasus Software	Strong evidence	Kettering, United KingdomHQ checked Sep 21, 2026	51-200	41 contacts →
	Strong 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 21, 2026
8	Aqilla	Strong evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	26 contacts →
	Strong evidence “Cloud-native finance and accounting software for multi-entity and multi-currency organisations.” Source: RevenueBase Database · checked Sep 21, 2026
9	Castle Computer Services	Strong evidence	Bellshill, United KingdomHQ checked Sep 21, 2026	51-200	23 contacts →
	Strong evidence “Founded in 1982, Castle Computer Services provides accounting and financial management software, business intelligence solutions, cloud and managed IT services throughout the UK…” Source: RevenueBase Database · checked Sep 21, 2026
10	UWM Accountants	Indirect evidence	Leeds, United KingdomHQ checked Sep 21, 2026	11-50	20 contacts →
	Indirect evidence “Leeds cloud accountants that care.” Source: RevenueBase Database · checked Sep 21, 2026
11	Myworkpapers	Partial evidence	Milton Keynes, United KingdomHQ checked Sep 21, 2026	11-50	19 contacts →
	Partial evidence “At MyWorkpapers we specialise in providing simple, but intelligent, cloud based software solutions to businesses, accountants, auditors and students.” Source: RevenueBase Database · checked Sep 21, 2026
12	Bluqube Accounting Software	Indirect evidence	Bristol, United KingdomHQ checked Sep 21, 2026	51-200	17 contacts →
	Indirect evidence “Welcome to bluQube - a better way to manage finance effectively.” Source: RevenueBase Database · checked Sep 21, 2026
13	Humony	Indirect evidence	Basingstoke, United KingdomHQ checked Sep 21, 2026	11-50	15 contacts →
	Indirect evidence “With over 30 years’ experience under our belt in helping our valued clients to work smarter, we find business solutions to your problems.” Source: RevenueBase Database · checked Sep 21, 2026
14	Chariot House LTD	Indirect evidence	London, United KingdomHQ checked Sep 21, 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 21, 2026
15	Yorkshire Accountancy Limited	Indirect evidence	Hull, United KingdomHQ checked Sep 21, 2026	11-50	12 contacts →
	Indirect evidence “Small professional firm of accountants.” Source: RevenueBase Database · checked Sep 21, 2026
16	MYT	Partial evidence	Croydon, United KingdomHQ checked Sep 21, 2026	1-10	12 contacts →
	Partial evidence “MYT Software is the perfect solution for small businesses, freelancers, and accountants looking to streamline their finances and focus on growth.” Source: RevenueBase Database · checked Sep 21, 2026
17	Accord	Indirect evidence	Edenbridge, United KingdomHQ checked Sep 21, 2026	11-50	11 contacts →
	Indirect evidence “Finance teams come to us when their finance system needs to support more complex reporting, approvals, workflows or business structures.” Source: RevenueBase Database · checked Sep 21, 2026
18	Steven Burton & CO Limited	Indirect evidence	Earls Colne, United KingdomHQ checked Sep 21, 2026	1-10	11 contacts →
	Indirect evidence “At Steven Burton & Co, we know how busy running a business can be.” Source: RevenueBase Database · checked Sep 21, 2026
19	Cheylesmore Chartered Accountants	Indirect evidence	Coventry, United KingdomHQ checked Sep 21, 2026	1-10	11 contacts →
	Indirect evidence “We will take the stress out of accounts, tax and bookkeeping so that you have time to work on you and your business.” Source: RevenueBase Database · checked Sep 21, 2026
20	AMS Admin Services	Strong evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	10 contacts →
	Strong evidence “AMS Admin Services: Accounting Made Simple At AMS Admin Services, we are dedicated to making accounting and financial management effortless and efficient for a wide array of…” Source: RevenueBase Database · checked Sep 21, 2026
21	Somax Finance LTD	Partial evidence	Bristol, United KingdomHQ checked Sep 21, 2026	11-50	9 contacts →
	Partial evidence “Welcome to SoMax Finance – your trusted partner for cutting-edge cloud accounting solutions.” Source: RevenueBase Database · checked Sep 21, 2026
22	Black And White Chartered Certified Accountants	Indirect evidence	Herriard, United KingdomHQ checked Sep 21, 2026	11-50	8 contacts →
	Indirect evidence “I’ve wanted to run my own accountancy practice ever since my work experience with a local firm at the age of 14 - but not a traditional, “vanilla” one.” Source: RevenueBase Database · checked Sep 21, 2026
23	Focus Accountancy LTD	Partial evidence	Horfield, United KingdomHQ checked Sep 21, 2026	1-10	7 contacts →
	Partial evidence “Focus is a small Bristol based accountancy firm specialising in supporting contractors, consultants and freelancers, helping them save time in bookkeeping and financial…” Source: RevenueBase Database · checked Sep 21, 2026
24	NO Worries Company Services LTD	Indirect evidence	Esher, United KingdomHQ checked Sep 21, 2026	11-50	7 contacts →
	Indirect evidence “Accountants for freelancers, self-employed, landlords, partnerships, individuals and SMEs, specialising in contractors since 2005.” Source: RevenueBase Database · checked Sep 21, 2026
25	Datafile Software Solutions Limited	Strong evidence	Preston, United KingdomHQ checked Sep 21, 2026	11-50	7 contacts →
	Strong evidence “Datafile is accounting software built for businesses that have outgrown off-the-shelf solutions.” Source: RevenueBase Database · checked Sep 21, 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: software financial accounting firms. 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 software financial accounting firms.
Partial evidence: Its own public description names part of software financial accounting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name software financial accounting firms. 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 207 software financial accounting firms based in the United Kingdom

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Software financial accounting firms based in the United Kingdom at a glance

As of Sep 21, 2026

47.3%Verified-email coverage

18.9Average contacts per company

1-10Median size (employees)

22.7%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

139

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 207 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 software financial accounting firms, 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 “software financial accounting firms”. 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 software financial accounting firms), 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 software financial accounting firms, 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, 1,851 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 21, 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.

Software financial accounting firms by metro

Software financial accounting firms in London47

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 software financial accounting firms, 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 software financial accounting firms are there based in the United Kingdom?

RevenueBase identified 207 software financial accounting firms 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?

Iris Software Group, headquartered in Slough, tops this list with the largest team on record.

Which city has the most software financial accounting firms?

London leads with 47 headquartered companies, followed by Bristol (6) and Birmingham (5).

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 1,851 verified decision-maker contacts tracked across these 207 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 21, 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.