1
Post-Quantum
London, United Kingdom
Protecting the world's information against today's threats and tomorrow's challenges
- Revenue
- $5M
- Customers
- -
- Year founded
- 2009
- Funding
- -
- Team size
- 1
- Growth
- -
Top 2,146 SaaS Companies in London, United Kingdom, May 2026
As of May 2026, there are 2,146 SaaS companies based in London. They have combined revenues of $35.6B and employ 184K employees. They've raised $29.5B in capital and serve 112.1M customers combined.
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Sorting: Highest -> Lowest
Top SaaS Companies in London
Showing 10 of 757 companies ranked by annual revenue.
- Revenue
- $5M
- Customers
- -
- Year founded
- 2017
- Funding
- -
- Team size
- 9
- Growth
- -
3
Nebulytics
London, England, United Kingdom
A powerful SaaS platform engineered to provide our clients a secure,flexible & scalable service upon which to conduct their daily operations
- Revenue
- $5M
- Customers
- -
- Year founded
- 2013
- Funding
- -
- Team size
- 1
- Growth
- -
4
Messly
London, England, United Kingdom
Messly is a SaaS, Professional Network that helps doctors find their next role in healthcare.
- Revenue
- $5M
- Customers
- 100
- Year founded
- 2016
- Funding
- $1.1M
- Team size
- 8
- Growth
- -
5
Supernotes Education Ltd
London, England, United Kingdom
Supernotes is your new home for ideas, records, tasks, and lists. The fastest way to take notes and collaborate with friends. Create notecards with Markdown, LaTeX, images, emojis and more.
- Revenue
- $5M
- Customers
- -
- Year founded
- -
- Funding
- -
- Team size
- 4
- Growth
- -
6
Kalido
London, England, United Kingdom
Kalido is an amazing AI powered platform that matches enterprise workforce skills and strengths to people, teams, projects and jobs.
- Revenue
- $5M
- Customers
- -
- Year founded
- 2014
- Funding
- $2M
- Team size
- 18
- Growth
- -
7
Ion Industries Ltd
London, England, United Kingdom
Provider of sales-force managed services intended to help companies implement effective and automated business processes. The company's sales-force managed services provides full implementation of sales-force cloud system, staffs and technical training, enabling businesses to significantly increase sales by selling faster and smarter.
- Revenue
- $5M
- Customers
- -
- Year founded
- 2016
- Funding
- -
- Team size
- 30
- Growth
- -4.35%
- Revenue
- $5M
- Customers
- -
- Year founded
- 2019
- Funding
- $1.6M
- Team size
- 22
- Growth
- -
- Revenue
- $5M
- Customers
- -
- Year founded
- 2019
- Funding
- -
- Team size
- 7
- Growth
- -
10
Gnatta
London, England, United Kingdom
Delivering universal customer engagement through our Gnatta software. Trusted by some of the biggest names in retail.
- Revenue
- $5M
- Customers
- -
- Year founded
- 2014
- Funding
- -
- Team size
- 18
- Growth
- -