Top Series C companies in London

Companies that have closed a Series C - growth-stage with significant revenue. Filtered to companies headquartered in London.

Edit the query above, or pick a refinement. 500 free credits on sign-up, no card needed.

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

Ranked by current headcount across Series C companies headquartered in London. Refreshed daily.

1
Moniepoint Group· London, England, United Kingdom
Moniepoint Inc. is Africa’s all-in-one financial ecosystem, helping 10 million businesses and individuals access seamless payments, banking, credit, and business management tools since 2019.As Nigeria’s largest merchant acquirer, it powers most of the country’s Point of Sale (POS) transactions. Through its subsidiaries, Moniepoint Inc. processes $22 billion monthly for its customers while operating profitably.Moniepoint Inc. is a fully remote tech company with a diverse workforce worldwide and is headquartered in London, with offices in the US, Nairobi and Lagos. Join us as a #DreamMaker to help power the dreams of businesses globally.
- Series C
- 5.6k employees
- Founded 2015
2
SLR Consulting· London, England, United Kingdom
SLR is a committed partner in our clients’ sustainability journeys.We help them move from influence to impact, turning intent into purposeful, practical action that delivers real-world results.Guided by our philosophy of Rational Sustainability, we focus on what truly drives long-term value. By viewing decisions through the lenses of risk, reward, and resilience, we help clients act with confidence, balancing environmental and social responsibility with commercial and strategic success.Our purpose - Making Sustainability Happen - means delivering outcomes that are grounded in evidence, shaped by experience, and built to last.SLR has been advising clients for over 30 years at every point of their project life-cycle. Starting as a UK business, we now operate as a global company with more than 4,500 people delivering client solutions across six regions. We have grown both organically and through welcoming other like-minded businesses with a similar One Team culture into the SLR group. We are ably supported by our principal investor, Ares Management, and will continue to build a balanced, successful and growing business.We’ve designed working life at SLR to look a little different. Because we know talented people often feel restricted by the rigid systems, lack of cross-functional collaboration and limited options for growth on offer elsewhere.Our One Team culture promotes meaningful professional and personal growth, our flat management structure provides many opportunities to progress, and our collaborative approach means you’ll get the chance to work on projects you care about and make a real difference.If you’re purpose-driven, self-motivated and keen to make an impact on a global scale, we want to hear from you.
- Series C
- 4.4k employees
- Founded 1994
3
TradingView· London, England, United Kingdom
We are TradingView, the world's most popular charting platform and the industry's forefront for financial visualization solutions. 100M+ traders worldwide use our platform as a go-to destination to chart, chat, and trade financial markets. Our product portfolio includes best-in-class charts, versatile commercial libraries, a social network, and many more tools for retail and business audiences. With 200M+ monthly visits, we are the #1 all-things investing website, and our solutions are used by fintech leaders such as Revolut, Binance, and CME Group.We wouldn't be where we are without our tight-knit multinational team from 40+ countries, distributed globally, including across core offices in London, Malaga, and Tbilisi. To get the best, we offer relocation packages with competitive compensation and ensure a smooth onboarding through mentorship and clear career paths.Reach out to us, and let’s grow together.
- Series C
- 2.9k employees
- Founded 2011
Live search
This list is a starting point
I can run a natural-language search across LinkedIn, GitHub, and the open web. Fire one of these, or edit the box up top to match exactly who you're after.
- Series C fintech companies in LondonRun
- Series C companies in London hiringRun
500 free credits on sign-up, no card needed.
4
Leverage Edu· London, England, United Kingdom
Leverage Edu is an AI-native global talent mobility & upskilling platform, operating across 40 countries. It has helped 175,000+ individuals in the last 9 years, channeled $1Bn worth forex, aggregated $500Mn of education loans, ensured 12,000 beds, & now hosts over a 1000 companies every year in job fairs for its alums across the world. For enterprise partners, Leverage Edu offers an AI product-suite called LE AI, which includes Vasu AI Coach, AI Interviewer, and AI Quality Compliance Specialist.Now, the platform has also branched out into Workforce Mobility with Leverage Careers (with focus on healthcare), and Industry-integrated Online Programs & Certifications with Leverage Online.
- Series C
- 1.2k employees
- Founded 2017
5
Teya· London, England, United Kingdom
Local Businesses are Non Stop. They open early, close late, serve customers, manage teams, pay suppliers and keep their communities moving, and Teya is built around that reality.By bringing together payments, access to money, cash flow management, funding and team tools in one connected ecosystem, we help make running a business feel simpler, with fair and transparent terms throughout.It is all designed to be simple, fast and human, with 24/7 support from a real person in under 10 seconds, so Local Businesses can spend less time managing money and more time doing what they do best.
- Series C
- 1.2k employees
- Founded 2019

6
Cleo· London, England, United Kingdom
Cleo was founded in 2016 by people who'd been burned by banks and frustrated by a financial system that wasn't built for the people using it.We created Cleo to change the world's relationship with money.More than a budgeting app, Cleo is an AI financial assistant that helps millions of people understand their money, build healthier financial habits, and make smarter decisions through personalized conversations, insights, and tools. We believe managing money should feel simple, empowering, and even enjoyable, not confusing or intimidating.Since launching, we've grown from a small team with a big idea into a company of more than 250 people, raising an $80 million Series C led by Sofina and reaching a $500 million valuation.Today, we're redefining what personal finance looks like in the age of AI by building products that millions rely on every day. We're just getting started.
- Series C
- 702 employees
- Founded 2016
7
Flo Health Inc.· London, England, United Kingdom
At Flo Health, our purpose is to build a better future for female health. We are the world’s leading period and ovulation tracker, empowering over 400 million women globally to take control of their health. With 77 million monthly active users, including 25% of US women, Flo has become a trusted partner in women's health. As the first European femtech unicorn, following a $230M Series C in July 2024, we're proud to lead the way in innovation and investment in women's health.With over 100+ medical experts, Flo is committed to supporting women at every stage of their health journey, from menstruation to conception, pregnancy, and menopause. We provide curated cycle and ovulation tracking, tailored health insights, daily bite-sized visual content, and a private community for users to share their questions and concerns. Flo addresses critical challenges in women’s health by:*Expanding access: Through partnerships like UNFPA, Flo provides free Premium access to up to 1 billion women in 66 countries, with 17 million subscriptions donated, helping bridge healthcare disparities.*Improving health literacy: By delivering accurate, accessible information and daily insights, Flo empowers millions to better understand their health and make informed decisions.*Advancing women's health research: Collaborating with leading institutions, Flo contributes to evidence-based women’s health research.In a world where women's health data is increasingly vulnerable, Flo is dedicated to providing a safe and secure platform. Recognized for its commitment to privacy, Flo's Anonymous Mode feature was named one of TIME's Best Inventions of 2023 and a finalist for Fast Company's 2023 World Changing Ideas Awards. Anonymous Mode allows users to access Flo's health features without associating personal information with their health data, setting a new industry standard for reproductive health data privacy.
- Series C
- 699 employees
- Founded 2015
8
Marshmallow· London, England, United Kingdom
We started building Marshmallow in 2017 to make migration easy. Since then we've grown to 700+ people, gained unicorn status, raised ~£140M, turned profitable, and insured millions of drivers and lent millions in loans.We're only just getting started. Our goal is to become one of the largest financial services providers in the world - not just by scaling what we have, but by building what comes next.To get there we need people who never settle for good enough. People who thrive here are hungry for ownership and focused on collective success over personal agendas. We're always looking for more of them.
- Series C
- 656 employees
- Founded 2017
9
9fin· London, England, United Kingdom
9fin is the AI-native intelligence platform for the global debt markets. It combines real-time news, comprehensive data, advanced analytics, and trusted AI to give credit teams complete visibility across public, private, and distressed debt. Built on advanced AI and deep domain expertise, 9fin helps professionals save time, win business, and outperform their peers. Trusted by over 300 elite financial institutions worldwide, including top investment banks, investors, advisors, and law firms, 9fin is the platform of choice for modern credit teams seeking a decisive edge in complex markets.
- Series C
- 572 employees
- Founded 2016
10
Vertice· London, England, United Kingdom
Vertice is the intelligent procurement platform built for the modern enterprise. By uniting agentic workflows, AI-powered insights, and expert buying talent, we enable finance and procurement teams in 100+ countries to operate with greater precision, speed, and impact.Customers use Vertice's platform to review, analyze and negotiate purchases with greater confidence. Vertice processes over $75 billion in spend, with a proven track record of delivering 20%+ savings and accelerating procurement cycles by 2x.Headquartered in London and recognised by the Financial Times as the UK’s fastest growing scale-up, Vertice also operates in New York, Boston, Sydney, Brno, Linz and Johannesburg. Learn more at www.vertice.one.
- Series C
- 526 employees
- Founded 2021

Reveal 96 more·500 free credits, no card

Find engineers at Series C companies in London

Series C companies in London are some of the fastest-moving employers in the market. The list above ranks the largest Series C-stage companies headquartered in London by current headcount, drawn from public LinkedIn and Crunchbase records. With 101 matching companies in Refolk’s index, the density of senior engineers, designers, and founders is unusually high.

At Series C, teams tend to be small, ambitious, and on the hunt for senior talent. The companies on this list are good signals for where the London talent market is heating up - and for which engineers and founders are about to become tomorrow’s operators.

Refolk converts this list into a live search. Ask for “founders of Series C companies in London” or “senior engineers at Series C companies in London hiring” and Refolk returns a ranked shortlist with evidence behind each match.

How this list is built

Refolk pulled Series C companies headquartered in London from public LinkedIn and Crunchbase records, ranked them by current employee count, and kept those with at least 5 employees. The list refreshes once a day.

Last refreshed: Wed, 05 Aug 2026 11:47:57 GMT

Search this list

Need an even more specific search?

Refolk runs natural-language searches across LinkedIn, GitHub, and the open web. Try one of these:

500 free credits on sign-up, no card needed.

Related lists

See all company lists.

Or zoom out

Common questions

How is this ranking built?

The list draws on the public company graph - headcount and growth signals, funding history, and recency. The criteria chips at the top show exactly which filters produced it, and the methodology section explains the ranking.

How fresh is the data?

The underlying index updates continuously and this page re-renders at least daily. Last refreshed: Wed, 05 Aug 2026 11:47:57 GMT.

Can I get the full list of 101 companies?

Yes. This page shows the top of the ranking; sign up and I'll run the search live for the complete, current list. You start with 500 free credits, no card required.

Can I find the people inside these companies?

Yes. Ask in plain English - for example "engineering leaders at these companies who joined in the last year" - and I return the specific people, with context on each.

Try it on your own search

Stop building boolean strings. Just describe the person.

Type one sentence and I plan the search, read GitHub, public LinkedIn and Crunchbase records, and the open web live, then hand back a ranked shortlist with the reasoning behind every name. No filters to learn, no export to clean up, no sales call to sit through.

One sentence in, a ranked shortlist out. No boolean, no filters, no seat to buy.
Read live at search time, not from a database that went stale last quarter.
Watch every step as it runs, and see why each name made the list.

500 free credits on sign-up. No card, no demo call. See real searches.

This list is a starting point