Company lists · Data refreshed October 2026

Top 25 B2B SaaS companies based in London, United Kingdom

RevenueBase identified 115 company matches for B2B SaaS companies associated with London, United Kingdom as of October 2026 and tracks 1,128 professional contacts across them, including 269 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for B2B SaaS companies 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 October 1, 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 Oct 1, 2026 How this list was built
115Companies
1,128Contacts tracked
269Verified emails
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The 25 largest B2B SaaS companies based in London, United Kingdom

Ranked by team size
Top 25 of 115 company matches for B2B SaaS companies based in London, United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 1, 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 Oct 1, 202651-20057 contacts →

Exact match

“Optimiser is a fully configurable business intelligence ecosystem that helps organisations manage relationships, operations, workflows, communications, and commercial activities…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Oct 1, 202651-20051 contacts →

Exact match

“Tailored ERP, CRM & SaaS that automates your operations and fuels measurable growth.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Oct 1, 202651-20038 contacts →

Exact match

“SaaS marketing strategy and execution team for B2B brands with limited in-house resources.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Oct 1, 202651-20031 contacts →

Exact match

“Eyona is a multi-product company specialising in B2B SaaS products.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Oct 1, 202611-5029 contacts →

Exact match

“Gripped is a digital first sales & marketing agency for B2B SaaS, technology & IT companies.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Oct 1, 202611-5025 contacts →

Exact match

“STRATOS is a London-based technology company founded in 2022.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Oct 1, 20261-1022 contacts →

Exact match

“An enterprise cloud software company that helps teams solve their problems by boosting productivity and transforming tech stacks on CRM platforms such as Salesforce, Dynamics 365…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Oct 1, 202611-5015 contacts →

Exact match

“Robosme - CRM to Win Easy to use cloud CRM that automates your business and benefits every process you touch the customer.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Oct 1, 202611-5013 contacts →

Exact match

“We help ambitious B2B Tech & SaaS companies to grow faster with connected sales and marketing.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Oct 1, 20261-1013 contacts →

Exact match

“We specialise in helping SaaS and B2B companies generate demand, book demos, and set-up meetings which your sales team can actually convert.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Oct 1, 202651-20010 contacts →

Exact match

“Broadcasting Platforms is a streaming and marketplace services provider.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Oct 1, 202611-509 contacts →

Exact match

“Smarty Software is a SaaS company based in the City of London, which mainly provides cloud accounting and cloud CRM solution services.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Oct 1, 20261-108 contacts →

Exact match

“We ideate, build and scale industry winning B2B software technology companies with the best second-time founders.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Oct 1, 20261-108 contacts →

Exact match

“A proactive CRM designed for modern SaaS.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Oct 1, 202651-2007 contacts →

Exact match

“Demand Studio is a B2B marketing services company with a highly experienced team and 250+ operational resources worldwide.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
16Exact matchLondon, United KingdomHQ recorded Oct 1, 202611-507 contacts →

Exact match

“Entranet, is a pioneering Cloud ERP Solution dedicated to delivering business applications over the internet.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Oct 1, 20261-106 contacts →

Exact match

“Software Solutions Through building and supporting other businesses, our company has grown from its small beginnings to becoming a trusted and renowned field leader in…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Oct 1, 20261-104 contacts →

Exact match

“Cloud 9 Assist Ltd develop a wide range of hosted online applications for businesses encompassing areas such as CRM, Order Processing, Project Management, Helpdesk, Expense Forms…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Oct 1, 202611-504 contacts →

Exact match

“Shoonyata's mission is to make power of innovation and software affordable to all.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Oct 1, 202611-504 contacts →

Exact match

“Cloudsaber is a specialist business solutions provider based in the UK, focused on implementing and optimising leading CRM, ERP, and accounting systems.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
21Exact matchLondon, United KingdomHQ recorded Oct 1, 20261-104 contacts →

Exact match

“We're a specialist B2B SaaS Digital Marketing Agency.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Oct 1, 20261-104 contacts →

Exact match

“Ouiteo Technologies is a B2B Software-as-a-Service (SaaS) provider specializing in business process automation using artificial intelligence and machine learning.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
23Exact matchLondon, United KingdomHQ recorded Oct 1, 202611-503 contacts →

Exact match

“Intentify Demand is a provider of demand and lead generation services, specialising in B2B sectors such as SaaS, IT technology, FinTech, Martech and HR Tech.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
24Exact matchLondon, United KingdomHQ recorded Oct 1, 20261-103 contacts →

Exact match

“BlueSpidy Social Office is a single sign-on web-based application delivering tools for SMEs to manage customers, sales and suppliers, people, products and projects, documents…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
25Exact matchLondon, United KingdomHQ recorded Oct 1, 20261-103 contacts →

Exact match

“Control your business from anywhere.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase

Showing 25 of 115 B2B SaaS companies based in London, United Kingdom

See the full list, filter by size, metro and specialty, and access 269 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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B2B SaaS companies based in London, United Kingdom at a glance

As of Oct 1, 2026
23.8%Verified-email coverage
9.8Average contacts per company
1-10Median size (employees)
Oct 1, 2026Page data refreshed

Companies by employee count

1-10
67
11-50
33
51-200
8
201-500
6
501-1,000
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 115 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 “B2B SaaS companies” 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 269 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 October 1, 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 “B2B SaaS companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many B2B SaaS companies are there based in London, United Kingdom?

RevenueBase identified 115 company matches for B2B SaaS companies associated with London, United Kingdom as of October 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?

Optimiser 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 B2B SaaS companies?

London leads the United Kingdom with 115 company records, followed by Manchester (11) and Bristol (5).

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 269 professional contacts with verified work emails tracked across these 115 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 October 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 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.