Top 10 New SaaS Startups in the UK

At the moment, SaaS is being referred to by many as one of the most exciting tech industries to be involved in, with oodles of new startups emerging in a plethora of different sectors. With demand for software-as-a-service solutions surging across every just about every sector – finance, healthcare, logistics, education and beyond – founders are building products that not only solve immediate pain points but also reshape how businesses operate.

Indeed, the strength of the UK SaaS ecosystem is being fueled by a blend of investor confidence, deep pools of technical talent, and a market that’s ready to embrace automation, efficiency, and data-driven decision-making on a scale we haven’t seen before.

But what really stands out in 2025 is how SaaS is no longer just about offering cloud-based tools. The most exciting startups are layering artificial intelligence into their platforms, embedding cybersecurity from the ground up and designing user experiences that are genuinely intuitive rather than bolted-on afterthoughts. These companies aren’t just trying to be another piece of enterprise software – rather, they’re actually positioning themselves as essential infrastructure for modern organisations.

For small businesses, SaaS tools now provide access to the kind of powerful capabilities that were once reserved for multinationals with big budgets and dedicated IT teams. For larger corporations, the latest SaaS offerings are unlocking agility and adaptability that older, on-premise systems simply can’t deliver. It’s revolutionary, to say the least.

Against this backdrop, the UK continues to stand out as one of the most important hubs for SaaS in Europe. London remains the beating heart (no surprise there), but innovation is also thriving in cities like Manchester, Edinburgh, Bristol and Cambridge, with startups tapping into regional strengths from fintech to biotech.

 

Why Are SaaS Startups Thriving in the UK?

 

There are several reasons why SaaS startups in the UK are flourishing, but at the core is the sheer versatility of the model. Subscription-based software lowers barriers to entry for businesses of all sizes, while giving founders recurring revenue streams that help drive sustainable growth. This economic structure has proven especially appealing to UK investors, who seem to bee backing SaaS at a higher rate than many other tech sectors.

Another factor is cultural. The UK has always been a testing ground for innovation thanks to its diverse business landscape, where a startup can refine its product with SMEs, test compliance demands in tightly regulated industries and scale up to meet enterprise-level needs, all without leaving the domestic market. The result is that SaaS companies born here tend to develop resilience and adaptability early on.

Post-pandemic digital transformation has also played its part. Remote and hybrid working models cemented the need for flexible, cloud-first tools and that demand hasn’t dipped in 2025. If anything, the expectations on SaaS providers are now even higher than ever before – businesses want more automation, tighter integration across platforms and increasingly, AI-powered insights that can deliver real competitive advantage. Startups that can meet those demands stand out quickly, and the UK has proven fertile ground for exactly this kind of innovation. Ultimately, the bar just got a whole lot higher.

 

Trends Defining the SaaS Landscape in 2025

 

Looking at the UK’s SaaS startups this year, a few themes are impossible to ignore. Artificial intelligence is front and centre (no surprise there), with many of the most promising platforms building AI directly into their core offering rather than treating it as an add-on. That is, AI as a product rather than a feature. Whether it’s predictive analytics in finance, personalised learning pathways in edtech or AI-driven automation in HR, the winners in 2025 are those using AI to solve specific, high-value problems, no matter how involved the AI tech actually is.

Cybersecurity is another defining trend. As organisations migrate more of their operations into SaaS environments, the risk profile grows. Startups that bake strong security and compliance frameworks into their products from the beginning are gaining traction, particularly in industries like healthcare and fintech where trust is paramount.

Finally, user experience is emerging as a decisive factor. Businesses no longer have patience for clunky, unintuitive software that requires weeks of training to get to grips with. The most exciting UK startups are the ones that combine enterprise-grade functionality with consumer-grade usability, making powerful tools accessible without the usual friction.

Together, these trends are highlighting why 2025 is such a transformative year for SaaS. UK startups aren’t just responding to demand – they’re actively shaping what the next generation of business software looks like.

 

 

10 Top Saas Startups in the UK in 2025

 

Here are 10 epic SaaS startups in the UK that we think you should keep an eye on.

 

Tessl

 

 

Tessl, founded in 2024 in London by Guy Podjarny, is pioneering “AI-native” software development. Rather than relying on code as the single source of truth, Tessl lets developers define functionality in natural language.

The platform autonomously generates, maintains and evolves software – a bold reinvention of how we build digital tools. Its recent $125M funding round has already valued the startup at more than $500M, underlining the huge expectations around it.

In terms of what’s next, it seems like it’s all going to be about scaling the adoption of spec-driven development and proving that AI can truly manage software life cycles with minimal human overhead.

 

Opna

 

 

Opna is a climate-tech SaaS platform that streamlines how corporations discover, fund and manage high-impact carbon removal projects. Founded by a female-led team, it aims to democratise climate action by unlocking capital for credible, equitable initiatives in the Global South.

It recently attracted attention through partnerships that channel significant funds into projects supporting climate resilience. Its uniqueness lies in combining transparency, financing infrastructure and social impact. The future for Opna is in scaling procurement systems and enabling more businesses to rapidly and credibly deploy real climate solutions that actually deliver on their net-zero promises.

 

Ascendex Cloud

 

 

Ascendx Cloud, founded in London in 2023, delivers AI-enhanced CRM SaaS solutions built atop Salesforce. It specialises in turning customer data into actionable insights, smarter workflows and growth levers across sales, service and operations.

A major funding round of more than £80M has given it the means to expand in the US, pursue acquisitions and broaden its AI-powered CRM capabilities. What makes it unique is its ability to unlock predictive value directly from CRM data rather than relying on external tools. Its mission is simple: help enterprise clients wring every drop of value from their customer relationships.

 

Vertice

 

 

Vertice is a SaaS and cloud-spend optimisation platform born in London and among the UK’s fastest-growing B2B SaaS startups. It provides businesses with granular visibility of their SaaS stacks – mapping usage, analysing cost per team or tool, streamlining procurement and eliminating waste before it becomes a budget sink.

This year, in 2025, Vertice secured close to €50M in fresh funding, taking its total to almost €100M. What makes it stand out is its automation and transparency, which turn SaaS management from a reactive exercise into a strategic advantage. Its next step is accelerating international expansion and deepening product features.

 

Big Change

 

 

Founded in 2013, BigChange is a field-service management SaaS platform designed for mobile workforces in service and transport sectors. It has grown steadily over the last decade to around $30M in revenue, serving hundreds of customers, with more than $100M in total funding secured.

A recent majority acquisition has given the company a new foundation to expand further, while retaining investor confidence through minority stakes. Its uniqueness comes from its focus on a specific sector and its longevity in a fast-moving market. Next up is international scale and deeper integrations across the service-management ecosystem.

 

AutogenAI

 

 

AutogenAI is a London-based SaaS tool that uses artificial intelligence to transform the way businesses write bids, tenders and grant applications. Combining AI engineers, linguists and seasoned proposal writers, the platform produces grounded, persuasive content that has already shown huge time savings and success rates for early adopters.

It’s also one of the first AI platforms to be authorised for government use in the UK, cementing its credibility in regulated industries. After raising more than $20M to fuel global growth, the company’s focus now is to deepen automation and expand into new sectors where compliance is critical.

 

Granola.ai

 

 

Granola is an AI-driven notepad for meetings that automatically transcribes and polishes notes, adapting to the context – whether it’s job interviews, investor calls or team stand-ups. It’s been embraced by founders and VCs alike, positioning itself as a pioneer of Software 3.0 and ambient intelligence in work culture.

In 2025, Granola secured $43M at a valuation of $250M, funding new collaborative features designed for teams. Its uniqueness lies in blending simplicity with smart contextual intelligence. The next frontier is taking its popularity beyond individuals and embedding itself across enterprises looking for seamless, real-time knowledge capture.

 

Builder.io

Builder.io is an AI-powered visual development platform that allows both developers and non-developers to design, iterate and optimise web and mobile experiences. Its “Visual Copilot” can interpret existing code, design tokens and frameworks, making collaboration between teams effortless.

The company has been on a mission to democratise software creation by letting anyone contribute to building products without compromising quality. Recent financial challenges have tested its trajectory, but its vision for accessible, AI-driven development remains strong. What’s next could be restructuring or pivots that allow Builder.io to continue shaping the way digital experiences are created.

 

Shop Circle

 

 

Shop Circle provides a suite of business applications, developer tools and capital services targeted at ecommerce and growth-focused businesses. With a focus on acceleration, its model is about equipping companies with the infrastructure they need to scale fast without stitching together dozens of point solutions.

What makes it unique is the breadth of services it offers under one roof – that is, blending operational, technical and financial support for online sellers. The company’s next step will likely involve sharpening its positioning, expanding its application ecosystem and doubling down on serving ecommerce businesses that demand speed and efficiency above all else.

Inforcer

 

 

Inforcer delivers standardisation for Microsoft 365 policies across multiple tenants, helping enterprises keep compliance, governance and security in check across sprawling digital environments. In a world where distributed systems and multi-tenant setups create huge complexity, Inforcer fills a niche that most IT teams struggle with.

Its primary strength lies in removing inconsistency, automating enforcement and reducing risk for organisations that operate in heavily regulated sectors. Looking ahead, the startup is likely to expand its capabilities to cover more policy types, broader integrations and support for global compliance frameworks, carving out a firm position in enterprise IT management.