Top 100 SaaS Companies in the UK | 2025
The software-as-a-service (SaaS) market is one of the fastest-growing sectors in the world. It’s therefore no surprise that the sector is an attractive field for entrepreneurs and investors alike. In fact, according to our most recent equity report, The State of UK Investment: Q1 2025, SaaS companies secured 21% of all the deals made in the UK in Q1 2025, and equated to a huge 29% of the total amount raised.
In this article, we’ve profiled 10 UK-based SaaS companies to watch this year innovating in this space. We’ve also put together an exclusive list of the top 100 SaaS companies.
What is software-as-a-service?
Before delving into our list of the top SaaS companies in the UK, it’s worth exploring what exactly SaaS businesses do and the major players in the global SaaS market.
A SaaS company develops software which fulfils a certain service or function, often made accessible to users through an internet or cloud platform. As well as the initial software development, SaaS companies continue to host, update, and upgrade their products, generally with the aim of improving overall user experience.
SaaS companies work across a wide range of industries, including fintech, big data, artificial intelligence (AI) and e-commerce. There are countless SaaS solutions in existence today, from human resources, customer relationship management (CRM) and web development, to social media and email marketing automation, enterprise resource planning (ERP), and project management.
Methodology
To create our top 10 profiles, and 100 company list, we looked at companies that:
- Fall under Beauhurst’s ‘SaaS’ industry
- Are headquartered in the UK
- Have an ‘Active’ status on Companies House
How does a SaaS business model work?
Different types of SaaS companies: B2B v B2C
SaaS companies can also be differentiated by who their target customer is. As the name suggests, business-to-consumer (B2C) SaaS companies develop software solutions for personal use by consumers. Business-to-business (B2B) SaaS companies aim their product offering at other companies, such as by helping them to perform better, manage their operations, or meet their customer needs. Some SaaS companies have designed both B2B and B2C SaaS products, however, offering services to both consumers and businesses.
Having now discussed the basics around SaaS companies, read on to discover the top SaaS companies in the UK.
Download the top 100 SaaS companies list.
Top 10 SaaS Companies in the UK
Lighthouse
Location: Southwark
Year of incorporation: 2017
Total amount raised: £379m
Lighthouse is a cloud-based platform designed to help hotels manage pricing and revenue by consolidating market data into one place. It provides information on competitor rates, demand forecasts, and online travel agency (OTA) trends through a single dashboard. This can support hotel teams in monitoring market conditions and making informed decisions about their pricing and distribution strategies.
Overall the company has made five acquisitions. Most recently it acquired German hotel revenue management platform HQ Revenue, in June 2024. The company has been through seven funding rounds, and raised a total of £379m in equity.
Thought Machine
Location: Camden
Year of incorporation: 2014
Total amount raised: £398m
Thought Machine is a fintech company that develops cloud-native core banking systems for banks and fintechs. Founded in Camden in 2014 by Paul Taylor, its flagship product, Vault Core, gives banks full programmable control over banking products — everything from savings accounts and loans to credit cards and mortgages — using a smart-contract-based engine and flexible configuration tools.
The company has been featured on a significant nine high-growth lists, including the FT1000 in 2024. In total it raised £393m over seven funding rounds.
Quantexa
Location: Tower Hamlets
Year of incorporation: 2016
Total amount raised: £421m
Quantexa is an AI software company founded in 2016, aiming to solve big data silos with smarter insights. Their core product, the Decision Intelligence Platform, hooks up internal and external data sources, runs graph analytics and entity resolution, and creates a connected “network” view. That helps big businesses and government agencies spot fraud and assess risk.
The company has been through six funding rounds, securing a total of £421m — and it acquired Irish language processing company AYLIEN in 2023.
Dojo
Location: Westminster
Year of incorporation: 2016
Total amount raised: £471m
Dojo is a fintech company that provides card payment solutions and business tools to over 140k SMEs in the UK and Europe. Best known for its Dojo Go card machines with 4G, Wi‑Fi, and next-day payouts, it also offers services like bookings and customer queue management for hospitality.
Headquartered in Westminster with offices across the UK and Ireland, Dojo employs over 1,200 people.The company has been through a total of five funding rounds and altogether raised £471m. It has also featured on 14 high-growth lists.
Improbable
Location: Tower Hamlets
Year of incorporation: 2012
Total amount raised: £664m
Improbable is a technology company that builds large-scale virtual world and simulation platforms. Best known for its SpatialOS and metaverse infrastructure projects like MSquared and Somnia, it helps create interconnected, immersive online experiences for gaming, defense, and enterprise use.
The company now focuses on incubating new ventures in AI, blockchain, and the metaverse, aiming to launch multiple spin-offs each year. In total the company has been through seven funding rounds, raising £664m, and it has received four grants totalling £1.87m.
OneTrust
Location: City of London
Year of incorporation: 2001
Total amount raised: £699m
OneTrust is now based in Atlanta, after originally being launched in the City of London. It’s a software company that helps organisations manage privacy, security, and compliance. Its platform offers tools for consent management, data mapping, vendor risk, ESG reporting, and AI governance.
In 2016, OneTrust acquired Optanon, a software developer that created online cookie policies. Since then it has gone on to acquire three more companies: DataGuidance, Intergris Software, and Planetly. Overall the company has secured £699m in equity through four funding rounds.
Zepz
Location: City of London
Year of incorporation: 2019
Total amount raised: £711m
Zepz (formerly WorldRemit) is a digital remittance and payments platform serving over nine million users across more than 130 countries via its brands WorldRemit and Sendwave.
Despite targeting full profitability and launching a digital wallet in 2025, Zepz underwent cost-cutting with layoffs.
Approximately 200 IT roles were cut (20% of its staff) in early 2025, and it closed some regional units to streamline operations post-replatforming and to boost efficiency.
The company has raised a total of £711m in equity across nine funding rounds, bringing it to number five on our list.
Starling Bank
Location: Tower Hamlets
Year of incorporation: 2014
Total amount raised: £715m
Starling Bank is a challenger bank founded in 2014 by Anne Boden. It offers a range of banking services, including personal and business current accounts, joint accounts, and Euro accounts, all accessible through its mobile app. The bank operates without physical branches, relying on its digital platform to serve customers.
The company has appeared on an impressive 15 high-growth lists, and attended two accelerator programs: the Future Fifty, and the Mayor’s International Business Programme. It has raised a total of £715m through nine equity funding rounds.
Checkout.com
Location: Hackney
Year of incorporation: 2012
Total amount raised: £1.36b
Checkout.com is a fintech company founded in 2012 by Guillaume Pousaz. It provides a global payments platform that enables businesses to accept, process, and disburse payments in over 150 currencies. The company offers a range of services, including a unified payments API, fraud detection, and local acquiring capabilities.
Since its incorporation in 2012, the company has acquired four companies. Most recently, it acquired French software company ubble, that made identity verification software for online transactions.
Checkout.com has appeared on nine high-growth lists, and attended two accelerator events. Overall the company has raised £1.36b, awarding it the bronze spot on our top SaaS companies list.
FNZ
Location: City of London
Year of incorporation: 2005
Total amount raised: £1.43b
Originally founded in New Zealand, FNZ is a global wealth management platform provider founded by Adrian Durham. Now headquartered in London, FNZ offers an end-to-end technology solution that integrates investment front office, tax wrappers, and back office operations under a platform-as-a-service model.
In total FNZ has acquired 14 companies — most recently in 2024, when it acquired Luxembourg-based Ifsam, a software company for fund management. The company has been through just two funding rounds but has raised a huge £1.43b in equity.
The future of SaaS companies in the UK
The UK’s SaaS sector is likely to continue its growth, driven by advancements in technology, increased digitalisation across industries, and the ubiquity of cloud-based solutions. Businesses in the UK are recognising the benefits of SaaS, including cost-effectiveness, scalability, and accessibility, which will contribute to the sustained expansion of the sector.
This isn’t just conjecture, we’ve seen a huge amount of investment going into SaaS companies in the UK. In Q1 2025, SaaS companies secured £1.67b investment, a 41% increase from Q4 2024 — marking it one of the most significant industries in the UK. And looking year-on-year, SaaS companies raised £5.04b in 2024, a 20% increase from 2023.
Working with Beauhurst
The UK’s SaaS sector is likely to continue its growth, driven by advancements in technology, increased digitalisation Get all the information you need on successful and upcoming SaaS companies in the UK with the BeauhurstInvest platform.
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