Company lists · Data refreshed November 2026

Top 22 Custom accounting software developers based in London, United Kingdom

RevenueBase identified 127 company matches for custom accounting software developers associated with London, United Kingdom as of November 2026 and tracks 682 professional contacts across them, including 210 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for custom accounting software developers 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
127Companies
682Contacts tracked
210Verified emails
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The 22 largest custom accounting software developers based in London, United Kingdom

Ranked by team size
Top 22 of 127 company matches for custom accounting software developers 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, 202651-20089 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Nov 5, 202611-5066 contacts →

Exact match

“Nomi is the ultimate cloud accounting suite built for accountants and bookkeepers.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Nov 5, 2026201-50052 contacts →

Exact match

“Accounting.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact 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
5Exact matchLondon, United KingdomHQ recorded Nov 5, 202611-5038 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Nov 5, 202611-5021 contacts →

Exact match

“AccNet Solutions was formed in November 2010 by Damitha Ukuwela as a firm providing accounting and bookkeeping solutions.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact 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
8Exact matchLondon, United KingdomHQ recorded Nov 5, 202611-5012 contacts →

Exact match

“AccounTax Zone is a complete accounting and business solution that helps you keep track of your business finances, lend a hand in annual accounts, and other financial matters…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Nov 5, 20261-109 contacts →

Exact match

“BEST BOOKKEEPING is an outsourced accounting service based in London SW18, United Kingdom.”

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

“Providing "evolved administration" in a forward-thinking way.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Nov 5, 20261-107 contacts →

Exact match

“Own a small business?”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Nov 5, 20261-105 contacts →

Exact match

“RealTime Finance was founded in January 2017 by experienced CFOs, Bryan Lawrie and Kim Dovell who have worked with numerous businesses to transform the effectiveness and output of…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Nov 5, 20261-105 contacts →

Exact match

“Integrated workflow, CRM and email for accountants and bookkeepers.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Nov 5, 202611-505 contacts →

Exact match

“PAS Accountants are business tacticians for growth providing accountancy and business services to a range of aspiring SMEs and individuals.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Nov 5, 202611-505 contacts →

Exact match

“ASG is a specialist provider of accounting and office support services to various business owners.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchLondon, United KingdomHQ recorded Nov 5, 202611-504 contacts →

Exact match

“Jacobs + MF Accounting Lifesavers has been offering financial control to businesses across the UK since 2010.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Nov 5, 2026201-5004 contacts →

Exact match

“PinnacleOSS offers a tailored accounting service, designed to work as an extension to your existing finance team or, if you’d prefer, as an alternative to hiring one at all.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Nov 5, 20261-104 contacts →

Exact match

“Business Beyond Boundaries | Accountants For Business We are accountants for business people.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Nov 5, 20261-103 contacts →

Exact match

“Mighty makes accounting easy, fast and affordable for freelancers, contractors and small business owners.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Nov 5, 20261-103 contacts →

Exact match

“BTS Accountancy is a new company that provides Accountancy and Bookkeeping services for small and medium-sized business.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchLondon, United KingdomHQ recorded Nov 5, 20261-103 contacts →

Exact match

“BMD: Expert Accounting Services At BMD, we provide comprehensive accounting solutions tailored to Sole Traders, Partnerships, and Limited Companies.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact 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

Showing 22 of 127 custom accounting software developers based in London, United Kingdom

See the full list, filter by size, metro and specialty, and access 210 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Custom accounting software developers based in London, United Kingdom at a glance

As of Nov 5, 2026
30.8%Verified-email coverage
5.4Average contacts per company
1-10Median size (employees)
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
88
11-50
29
51-200
6
201-500
3

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 127 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 “custom accounting software developers” 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 210 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 “custom accounting software developers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many custom accounting software developers are there based in London, United Kingdom?

RevenueBase identified 127 company matches for custom accounting software developers 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?

kpi.com 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 custom accounting software developers?

London leads the United Kingdom with 127 company records, followed by Manchester (13) and Bristol (12).

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 210 professional contacts with verified work emails tracked across these 127 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.