Company lists · Data refreshed November 2026

Top 17 Accounting integration software startups based in London, United Kingdom

RevenueBase identified 47 company matches for accounting integration software startups associated with London, United Kingdom as of November 2026 and tracks 285 professional contacts across them, including 109 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for accounting integration software startups associated with London, United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 5, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 SmartSearch · Exact Recorded Nov 5, 2026 How this list was built
47Companies
285Contacts tracked
109Verified emails
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The 17 largest accounting integration software startups based in London, United Kingdom

Ranked by team size
Top 17 of 47 company matches for accounting integration software startups based in London, United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Nov 5, 202651-20050 contacts →

Exact match

“At Acting Office we deliver a fully integrated software platform designed for modern accountancy practices that want precision, efficiency and complete visibility across their…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Nov 5, 202611-5026 contacts →

Exact match

“Cloud-native finance and accounting software for multi-entity and multi-currency organisations.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Nov 5, 202611-5019 contacts →

Exact match

“What would your ideal accounting service give you?”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Nov 5, 202611-5019 contacts →

Exact match

“As a leadership team with more than 45 years’ combined experience, our mission is to enable businesses to focus on growth and profitability by offering bespoke Finance, Accounting…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Nov 5, 202611-5018 contacts →

Exact match

“Mayday mends month end for in-house finance teams at complex businesses scaling with Xero or Quickbooks Online as their core accounting system, including those managing multiple…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Nov 5, 202611-5017 contacts →

Exact match

“Ember is a specialist accounting and tax software platform and was acquired by Starling Bank in 2025.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Nov 5, 202611-5011 contacts →

Exact match

“At hibooks, we believe that the true potential of any business lies in the ability to focus on its core vision without being bogged down by the intricacies of financial management.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Nov 5, 202611-5010 contacts →

Exact match

“4PointZero is an international technology and advisory company that specialises in the implementation of cloud-based accountancy services.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Nov 5, 202611-508 contacts →

Exact match

“Manually calculating KPIs and metrics in large datasets is a thing of the past!”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Nov 5, 202611-507 contacts →

Exact match

“We are a small and nimble fintech company, with unique skills for extracting, understanding and transforming accounting data.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Nov 5, 202611-504 contacts →

Exact match

“Kloo is an innovation layer on your accounting platform and bank account making enterprise finance teams more efficient, reducing costs and increasing control.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Nov 5, 20261-103 contacts →

Exact match

“Better Bookkeeping Solutions Ltd provides cloud bookkeeping, VAT, payroll, CIS, management reporting and accounting software support for growing UK SMEs.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Nov 5, 20261-103 contacts →

Exact match

“Drivn empowers tech startups to scale faster and smarter by harnessing the power of data-driven insights.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Nov 5, 20261-102 contacts →

Exact match

“We help individuals, startups and growing businesses stay on top of their accounting and tax obligations with a modern, technology-driven approach.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Nov 5, 20261-102 contacts →

Exact match

“At Evolution Dynamic our mission is to provide solutions for financial process efficiency to our customers.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchLondon, United KingdomHQ recorded Nov 5, 20261-102 contacts →

Exact match

“T-A-X.Online is a modern technology Accountancy and TAX services firm that empowers you to futurify your Accounts and Tax affairs.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Nov 5, 20261-101 contacts →

Exact match

“QuickFile is a free cloud based accounting application for contractors, small businesses and entrepreneurs.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

Showing 17 of 47 accounting integration software startups based in London, United Kingdom

See the full list, filter by size, metro and specialty, and access 109 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Accounting integration software startups based in London, United Kingdom at a glance

As of Nov 5, 2026
38.2%Verified-email coverage
6.1Average contacts per company
1-10Median size (employees)
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
28
11-50
18
51-200
1

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 47 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with London, United Kingdom whose business descriptions match “accounting integration software startups” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 109 professional contacts with verified work emails across the full matched dataset. 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 November 5, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “accounting integration software startups”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many accounting integration software startups are there based in London, United Kingdom?

RevenueBase identified 47 company matches for accounting integration software startups associated with London, United Kingdom as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Acting Office tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United Kingdom has the most accounting integration software startups?

London leads the United Kingdom with 47 company records, followed by Bristol (4) and Manchester (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 109 professional contacts with verified work emails tracked across these 47 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 5, 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 SmartSearch, 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.