Top Late-stage venture companies in London

Series E and beyond - pre-IPO scaleups with hundreds of employees and meaningful revenue. Filtered to companies headquartered in London.

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Built from a search like: “Top Late-stage venture companies in London”

Ranked by current headcount across Late-stage venture companies headquartered in London. Refreshed monthly.

1
Formula 1· London, England, United Kingdom
Formula 1® delivers the world’s greatest sports and entertainment spectacle with innovation, inclusivity, and sustainability at the heart of its future growth and value. As the global rights holders of this incredible sport our team delivers the 24-race calendar direct to our passionate fans around the globe. Everything you see on screen or at an event comes via our people at F1. Whether its engineering, broadcast, legal, logistics, security, event management, commercial, media rights, marketing, and communications there is always a driven and talented team working to maximise the potential of the sport. We are focused on delivering the best for our fans and partners while also ensuring we do the right thing as a business and use the power of Formula 1 to make a positive contribution to the places we visit and to our own community. That is why sustainability and accessibility are part of every decision F1 makes. Our commitment to being Net Zero by 2030 is already reducing our emissions both on and off the track, and our focus on diversity and inclusion ensures everyone is welcome. This is Formula 1!Be vigilant against online impersonation. We will only contact candidates using email addresses ending in @F1.com, and we never use personal accounts or messaging apps to offer roles.
- Series unknown
- 6.3k employees
- Founded 1950
2
Octopus Energy· London, England, United Kingdom
We're on a mission to make a big green dent in the universe by building a truly sustainable energy system globally.That means making power greener, smarter, and more affordable for everyone.We put customers at the heart of everything we do: with always-fair prices, transparency and outrageous customer service.We drive system change: with transformative tech to make renewable energy the norm and end global reliance on fossil fuels.Octopus Energy Group is made up of 10 businesses spanning 6 countries across 3 continents, including: Octopus Energy Retail, Kraken Technologies, Octopus Energy Generation, Kraken Flex, Octopus Electric Vehicles, and the Octopus Centre for Net Zero. More on OEG @ octopusenergy.group
- Series unknown
- 5.8k employees
3
PeoplePerHour· London, England, United Kingdom
PeoplePerHour is the UK’s leading freelance marketplace. Founded in 2007 the site boasts over 3m freelancers across 180+ countries and has paid out in excess of £150m to freelancers since. Since its inception, PeoplePerHour has become an invaluable resource for small businesses in the UK and outside, allowing them hire expert talent as and when needed, 'on-demand' thereby staying lean and flexible while they grow.Our mission is to empower people worldwide to live their work dream, building their business from the ground up and becoming financially and professionally independent.Find out why one million business owners use PeoplePerHour to help grow their business — post your project for free and find the right freelancer for any project within minutes. www.peopleperhour.com/job/new
- Series unknown
- 4.1k employees
- Founded 2007
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4
AlphaSights· London, England, United Kingdom
Founded in 2008, AlphaSights is the global leader in knowledge on demand. We connect investors and business leaders with the knowledge they need to succeed. Working from nine cities globally, our 2,000+ colleagues provide round-the-clock coverage to the world's top investment funds, consultancies, and Fortune 500s. Learn more about us at alphasights.com. Please note that AlphaSights communicates exclusively by email through the AlphaSights domain, @alphasights.com, LinkedIn, and phone (including via text, WhatsApp, and WeChat). Any communications you receive that purport to come from AlphaSights but have been sent from another email domain (e.g. Gmail or Hotmail) or via other forms of social media (e.g. Facebook, Instagram, Twitter, or Telegram) are likely to be fraudulent. If in doubt as to whether you have received genuine communication from AlphaSights, please contact us at https://www.alphasights.com/contact/.
- Series unknown
- 3.9k employees
- Founded 2008
5
Framestore· London, England, United Kingdom
Framestore combines talent and technology to reframe the possible in film, content, advertising and immersive experiences.Founded in 1986, Framestore is now a global company of over 3,000 people across eight locations. We create pixel-perfect images for blockbuster films and TV, iconic advertising campaigns and innovative immersive projects. Our portfolio of work is underpinned by an industry-leading expertise in VFX and has resulted in a multitude of awards including Oscars and BAFTAs as well as a record number of Cannes Lions awards, which all cement our position at the forefront of innovation.We have studios in London, Montreal, New York, Los Angeles, Chicago, Mumbai, Melbourne. Visit our website for current vacancies in film, advertising and immersive: https://www.framestore.com/careers
- Series unknown
- 3.4k employees
- Founded 1986

6
Toluna· London, England, United Kingdom
Toluna is a global insights leader that equips brands with trusted consumer intelligence that keeps them one step ahead, delivering insights at the speed they need without sacrificing the confidence their decisions require. For over two decades, Toluna has helped organizations of every size increase their impact through deep research expertise and advanced technology. Toluna's consumer panel, 81 million people strong, is now augmented by a fully synthetic panel, extending its reach to audiences and questions beyond the scope of traditional methods and delivering limitless insights. A leader in AI-driven research with a consistent presence among GRIT's most innovative suppliers, Toluna serves clients in more than 75 markets and is recognized worldwide for both the quality and speed of its research.
- Series unknown
- 3.2k employees
- Founded 2000
7V
Vale Base Metals· London, England, United Kingdom
We are VBM, a global supplier of critical minerals for today’s needs and tomorrow’s transformation.With industry-leading copper, nickel and cobalt resources in Canada, Brazil and Indonesia, we provide a secure and responsible supply to customers around the world. Our purpose is clear: to provide mineral security to a world in transition. Our success is built on agility, resilience and cost-competitiveness, supported by a workforce empowered to innovate and consistently deliver results. With a vast endowment of copper and nickel, established infrastructure and a rich operating history, we are uniquely positioned to meet the growing demand for critical minerals.Critical today. Accelerating tomorrow.- Vale Base Metals Limited is based in London, United Kingdom, with its global operations centre in Toronto, Canada. Vale Base Metals is 90 per cent owned by Vale S.A. (VALE) and 10 per cent by Manara Minerals Investment Company.
- Series unknown
- 3.2k employees
- Founded 2024
8
Tag· London, England, United Kingdom
Tag is an end-to-end production company, making ideas land for every brand.We craft high quality and scalable content, driven by the latest technology. 50 years of omnichannel expertise and an experienced team with an inventivemindset make sure your big ideas resonate everywhere. Our technology platforms help you achieve more efficient, effective workflows, optimized by AI.With Tag, your brand speaks to people across the world, achieving global reachwith local relevance. In short, we make it land.
- Series unknown
- 3.2k employees
- Founded 1972
9
Ciklum· London, England, United Kingdom
Ciklum is a global Experience Engineering firm that stands at the forefront of innovation, blending next-generation product engineering, exceptional customer experiences, and cutting-edge AI. The business revolutionizes the way people live by developing technologies that reimagine, reshape, and redefine the future.For over 20 years, Ciklum has been a trusted partner to global enterprises and digital disruptors, spearheading the creation of digital solutions that tackle complex corporate challenges while propelling businesses toward accelerated growth and success.Its global team of over 4,000 highly skilled engineers, experience design specialists and consultants joins forces to engineer technology that paves the way for the future of your business.Ciklum builds tailored digital solutions that leverage emerging technologies for such clients as Just Eat, Metro Markets, EFG International, Zurich Insurance and others.For more information about us visit www.ciklum.com
- Series unknown
- 3k employees
- Founded 2002
10
Two Circles· London, England, United Kingdom
Two Circles is a global sports & entertainment business that grows audiences and revenues for the world’s leading organizations. We help our clients know fans best.
- Series unknown
- 2.9k employees
- Founded 2011

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Find engineers at Late-stage venture companies in London

Late-stage venture companies in London are some of the fastest-moving employers in the market. The list above ranks the largest Late-stage venture-stage companies headquartered in London by current headcount, drawn from public LinkedIn and Crunchbase records. With 965 matching companies in Refolk’s index, the density of senior engineers, designers, and founders is unusually high.

At Late-stage venture, 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 Late-stage venture companies in London” or “senior engineers at Late-stage venture companies in London hiring” and Refolk returns a ranked shortlist with evidence behind each match.

How this list is built

Refolk pulled Late-stage venture 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 monthly.

Last refreshed: Fri, 18 Sep 2026 07:57:07 GMT

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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.

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The underlying index updates continuously and this ranking is rebuilt monthly. Last refreshed: Fri, 18 Sep 2026 07:57:07 GMT. For a list built against the index as it stands today, sign up and run the search live.

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