Company lists · Data refreshed September 2026

Top 11 Developer accounting software companies based in the United Kingdom

RevenueBase identified 39 developer accounting software companies headquartered in the United Kingdom as of September 2026 and tracks 584 professional contacts across them, including 290 with verified work emails and 45 with mobile numbers. London is the largest hub.

This list covers developer accounting software 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 1, 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 RevenueBase Smart Search rating on every row Refreshed Sep 1, 2026 86% judged on-target in blind review
39Companies
584Contacts tracked
290Verified emails
45Mobile numbers
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The 11 largest developer accounting software companies based in the United Kingdom

Ranked by team size
Top 11 of 39 developer accounting software companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 1, 2026. RevenueBase Smart Search rates how each company's information relates to developer accounting software 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceEdinburgh, United Kingdom51-200324 contacts →

Indirect evidence

“One product.🤳 17 years.”

Source: RevenueBase Database · checked Sep 1, 2026
2Strong evidenceSlough, United Kingdom1,001-5,00044 contacts →

Strong evidence

“IRIS is a long-established industry leader in accounting software and services for accountants and bookkeepers.”

Source: RevenueBase Database · checked Sep 1, 2026
3Partial evidenceLondon, United Kingdom51-20034 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 1, 2026
4Strong evidenceLondon, United Kingdom11-5030 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 1, 2026
5Indirect evidenceLondon, United Kingdom11-5027 contacts →

Indirect evidence

“At Addition Finance, we're revolutionising the landscape of business finance on a global scale.”

Source: RevenueBase Database · checked Sep 1, 2026
6Indirect evidenceBristol, United Kingdom51-20017 contacts →

Indirect evidence

“Welcome to bluQube - a better way to manage finance effectively.”

Source: RevenueBase Database · checked Sep 1, 2026
7Indirect evidenceLondon, United Kingdom11-5016 contacts →

Indirect evidence

“Clear Books is a small business supporting small businesses.”

Source: RevenueBase Database · checked Sep 1, 2026
8Partial evidenceCroydon, United Kingdom1-1011 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 1, 2026
9Strong evidenceLinby, United Kingdom11-507 contacts →

Strong evidence

“Datafile is accounting software built for businesses that have outgrown off-the-shelf solutions.”

Source: RevenueBase Database · checked Sep 1, 2026
10Partial evidenceStaines-Upon-Thames, United Kingdom11-502 contacts →

Partial evidence

“Dataflow is a Financial Management Software company.”

Source: RevenueBase Database · checked Sep 1, 2026
11Indirect evidenceDerby, United Kingdom1-102 contacts →

Indirect evidence

“It may sound a cliché, but we are passionate about the solutions we create.”

Source: RevenueBase Database · checked Sep 1, 2026

Showing 11 of 39 developer accounting software companies based in the United Kingdom

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Developer accounting software companies based in the United Kingdom at a glance

As of Sep 1, 2026
49.7%Verified-email coverage
7.7%Mobile-number coverage
15.0Average contacts per company
1-10Median size (employees)
35.9%Largest-city concentration · London
Sep 1, 2026Page data refreshed

Companies by employee count

1-10
22
11-50
10
51-200
6
1,001-5,000
1

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 developer accounting software 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 “developer accounting software 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 developer accounting software 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 developer accounting software 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, 290 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 1, 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 developer accounting software 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 developer accounting software companies are there based in the United Kingdom?

RevenueBase identified 39 developer accounting software 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?

Freeagent, headquartered in Edinburgh, tops this list with the largest team on record.

Which city has the most developer accounting software companies?

London leads with 14 headquartered companies, followed by Manchester (2) and Croydon (2).

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 290 verified decision-maker contacts tracked across these 39 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 1, 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.