Series B SaaS companies in London

Software-as-a-service vendors selling subscription cloud software to other businesses. Filtered to Series B-stage companies headquartered in London.

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Built from a search like: “Top Series B SaaS companies in London”

Ranked by current headcount across Series B SaaS companies in London. Refreshed monthly.

1
WGSN· London, England, United Kingdom
WGSN is the global authority on consumer trend forecasting. We help brands around the world create the right products at the right time for tomorrow’s consumer.WGSN's trusted consumer and design forecasts power outstanding product design, enabling our customers to create a better future. Our services cover consumer insights, beauty, consumer tech, fashion, interiors, lifestyle, food and drink forecasting, data analytics and expert advisory.
- Series B
- 990 employees
- Founded 1998
2
GWI· London, England, United Kingdom
The next evolution of AI is humanized data. And who’s got that data? We have.For well over a decade GWI has provided real-world, human-sourced data to power business decisions in some of the world’s biggest companies. Today we’re using that same human data to revolutionize tomorrow’s AI systems. It’s a future where real data, gathered from real people, creates real understanding. It means GWI will be at the forefront of shaping how the next generation of AI models understand and interact with the world.Given the future of AI, the size of this opportunity is simply staggering. If you’d like to be part of it, we’re on the lookout for out-of-the-box thinkers to help us do more great things.
- Series B
- 739 employees
- Founded 2009
3
Venda· London, England, United Kingdom
Venda is one of the world’s leading innovators and providers of digital commerce solutions, leveraged by almost 100 manufacturers and retailers to deliver a consistent brand experience across online, mobile and in-store channels. Since 2001, Venda has helped its clients navigate the fast-evolving digital commerce landscape, providing comprehensive design, build, operational and support services; maximizing ROI through expanded revenues and contained costs. Venda's cloud-based Software-as-a-Service (SaaS) platform processes millions of transactions every month, for clients with online revenues ranging from £2m to over £100m including Fat Face, Tesco F&F Clothing, Laura Ashley and Russell & Bromley. With offices in New York, London, Germany and Bangkok and a global partner ecosystem, Venda delivers digital commerce expertise, support and deployment to brands and retailers with global operations and aspirations. For further information please visit www.venda.comYou can follow us on Facebook: www.facebook.com/vendainc and on Twitter:USA http://twitter.com/#!/VendaIncUK http://twitter.com/#!/VendaUKGermany https://twitter.com/VendaDE
- Series B
- 569 employees
- Founded 2001
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4
ZOE· Southwark Cathedral, London Bridge, Westminster Bridge, Newington, New Kent Road, Lambeth North, Southwark, Waterloo, Lambeth, Old Kent Road, South Bank, Borough, Bermondsey, England, United Kingdom
ZOE combines scientific research with cutting-edge AI to improve the health of millions. We are a remote-first, well-funded scale-up created by the world’s top scientists and backed by founders, investors, and entrepreneurs who have built multi-billion dollar tech companies. Our personalised nutrition program radically reimagines a fundamental human need – eating well for your body. Currently available in the US and the UK, ZOE is already helping tens of thousands of its members adopt a healthier lifestyle.Our collective work and expertise in biology, engineering, data science, and nutrition science have led to multiple breakthrough papers in leading scientific journals such as Nature Medicine, Science, The Lancet, and more.We value inclusivity, transparency, ownership, open-mindedness and diversity. We are passionate about delivering great results and learning in the open. We want our teams to have the freedom to make long-term, high-impact decisions, and the well-being of our teammates and the people around us is a top priority.
- Series B
- 417 employees
- Founded 2017
5
Fuse Energy· London, England, United Kingdom
We are building a full stack energy company to lower cost of energy & accelerate energy abundance. We are hiring globally. We've raised $210m from top tier investors to fix Energy.We never settle - second best is not an option.
- Series B
- 414 employees
- Founded 2022

6
Lavanda· Newington, Waterloo, London Bridge, Southwark, Lambeth North, New Kent Road, Westminster Bridge, Southwark Cathedral, Lambeth, Old Kent Road, South Bank, Borough, Bermondsey, England, United Kingdom
Our transformative property management software and solutions help support many of the world’s leading real estate companies, helping ensure their future success by providing innovative solutions that maximise ROI and inform good decision-making.Our PMS platform and solutions help organisations turn insights into opportunities enabling better decision-making and results via a highly evolved, powerful and compliant software platform that channels business intelligence to provide insights and resilience for organisations.
- Series B
- 364 employees
- Founded 2014
7
Mimica· London, England, United Kingdom
Mimica shows enterprises where to streamline, standardize, and automate processes across the entire organization — with zero manual effort, and in as little as two weeks. We answer the most important questions in a business: How are our people spending their time? How do we make these processes more efficient? Where’s the best place to start improving or automating? Here’s how we do it: Mimica’s AI-powered task mining observes employee actions across the desktop and categorizes them into detailed process maps. Mimica’s process intelligence highlights inefficiencies, prioritizes improvements based on ROI, recommends the optimal technology for automation (RPA, intelligent document processing, GenAI), and provides a blueprint for building new automations.Mimica transforms how work gets done across the enterprise, so you can maximize workforce productivity, cut costs, and drive operational excellence. Get started at Mimica.ai
- Series B
- 301 employees
- Founded 2018
8
Accurx· London, England, United Kingdom
Accurx is where conversations happen with and about patients. Through one, easy-to-use platform, we help everyone involved in a patient’s care to communicate and collaborate.Whether you’re a patient or a healthcare professional, Accurx lets you connect seamlessly with the people you need to. We believe that healthcare runs on conversations - conversations in GP practices, on hospital wards, over the phone, text, video, email and from a patient’s home. That’s why we’re working toward a health system where everyone involved in patient care can communicate for the good of patients and healthcare staff.Every interaction on Accurx helps to build a better-connected healthcare system, where easy communication changes and saves lives every day.
- Series B
- 277 employees
- Founded 2016
9
hyperexponential· Newington, Waterloo, London Bridge, Southwark, Lambeth North, New Kent Road, Westminster Bridge, Southwark Cathedral, Lambeth, Old Kent Road, South Bank, Borough, Bermondsey, England, United Kingdom
hyperexponential (hx) is the agentic platform for underwriting work for commercial P&C insurance. We give underwriters, actuaries, and portfolio leaders the governed decision logic and organizational memory that let agents act safely in live underwriting, without rediscovering appetite, pricing, and rating rules every time they run.Top global carriers trust hx for underwriting decisions across $75bn+ in annual commercial P&C premium.By the insurance market, for the insurance market.
- Series B
- 268 employees
- Founded 2017
10
Arbolus· London, England, United Kingdom
Arbolus is the next-generation customer diligence platform, redefining how private equity investors and consultants access real, actionable, and differentiated customer insight on SaaS and technology companies.At the core of our platform is the world’s largest database of attributable B2B customer reviews, giving investment and origination teams direct access to unique customer sentiment, and a true strategic advantage to run faster, more confident diligence on the world’s leading software assets.Since 2018, we’ve redefined the traditional expert network model with a tech-driven approach that delivers high-impact insight at the speed of modern dealmaking. Arbolus stands out through its unique database of customer reviews accessible via the Arbolus Customer Review Library, Canopy, our market-first automated Q&A tool, and our unmatched standard of client service, because great technology should always be backed by great people.Headquartered in London, Arbolus is a venture-backed scale-up with 170+ employees across five global hubs, including Barcelona, New York, and Gurgaon. Following a $20M Series B, we are rapidly expanding our U.S. presence as we execute our mission: to digitize human knowledge and make it instantly accessible and actionable.
- Series B
- 263 employees
- Founded 2018

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Find engineers at Series B SaaS companies in London

Searching for “engineers at top Series B SaaS companies in London” surfaces this slice of the market. The list above ranks SaaS companies headquartered in London whose latest disclosed round is Series B, by current headcount, drawn from public LinkedIn and Crunchbase records. With 81 matching companies in Refolk’s index, this is a tight read on where the SaaS talent in London is heating up.

Three filters at once narrows the field hard. The companies that survive all three - Series B, SaaS, in London - are usually the most targeted recruiting pool a hiring manager can ask for. Senior engineers, founding designers, and product leads here are about to become SaaS’s next operators and angel investors.

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How this list is built

Refolk pulled SaaS companies headquartered in London whose latest disclosed funding round is Series B from public LinkedIn and Crunchbase records, ranked them by current employee count, and kept those with at least 3 employees. The list refreshes monthly.

Last refreshed: Wed, 21 Oct 2026 00:33:36 GMT

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