Top Series A companies in the United Kingdom

Kodland is an international online school of digital skills for children and teenagers from 6 to 17 years old. We teach programming, digital creativity and basic computer knowledge. The company started in 2018 and grew quickly throughout the years. Today, Kodland has 16,000 students and 1,000 teachers. The geography of the site is constantly expanding and includes over 40 countries. Our courses’ syllabuses are developed by teachers with extensive professional experience in Computer Science and are taught by qualified instructors. We are working on an international goal: to create the best educational content on the EdTech market, which will help our students to study effectively and gain the necessary knowledge to implement their own projects. Our team values: We enjoy what we do We value our colleagues and mark their positive results We feel our own contribution to the development of the company. If you feel that our values and goals are close to you, join our team to contribute to the education of children!

• Series A
• 1.7k employees
• Founded 2018

Prolific is a technology company building the biggest pool of quality human data in the world—and the ultimate platform to access it.Over 35,000 AI developers, researchers, and organizations use Prolific to gather data from real, engaged participants—with a new study launched every 2 minutes.Prolific has been ranked among the fastest-growing businesses in the Financial Times 1000 in 2025 & 2024 and the Deloitte Technology Fast 50 in 2023.

• Series A
• 1.6k employees
• Founded 2014

Zenith is the UK’s leading independent leasing, fleet management and vehicle outsourcing business. Whether it’s trucks, vans or cars; a long-term commitment or an instant response, Zenith has the best people and the best tech in-house to ensure fleets are performing at their peak in the ever-changing landscape, 24/7/365.We're independent, so we can be trusted to always do what's right for our customers. That's why we've been leading the way for 30 years.

• Series A
• 1.1k employees
• Founded 1989

Tutorful helps parents and students across the UK find their perfect match, stress-free.We've supported over 3 million hours of tutoring, in everything from Maths to Mandarin, Accounting to Art. Whether you're planning ahead or need help fast, we're here for you.What makes us different?We do the hard part: You don't need to know what makes a good tutor, or whether a qualification actually matches the subject. Tell us about your child, and we'll recommend the right fit for their level and needs. We match on the details that matter, not just the subject.Trusted and checked: Every tutor is DBS-checked and vetted before they join us. Because lessons are booked and paid for through Tutorful, we can also see who students keep coming back to - not just who looks good on paper.Find the right fit: If the first lesson isn't quite right, we'll rematch your child at no cost, and handle the awkward part ourselves.Good support shouldn't be hard to find. We're doing our best to make sure it isn't.

• Series A
• 912 employees
• Founded 2015

Koru Kids is London’s fastest growing childcare brand. We’re making it easier and more affordable for families to access high quality childcare. Our after school service matches parents in London with the top 10% of student nannies in London and our nanny share service helps families to share nannies with other local families. We don’t just believe in providing outstanding childcare to families, we are all about using technology to make it seamless for parents. We’ve been blown away by the response from parents and are consistently beating our growth targets. We are backed by fantastic investors, including top venture capitalists and business angels such as Michael Pennington the founder of Gumtree. We won the South of England region in the ‘Best of Britain’ awards 2017, and are currently shortlisted for several awards: the UK Business Awards 2017 as ‘Disruptor of the Year’, and in the Best Women Awards 2017 as ‘Best New Business’, ‘Best Technology’ and ‘Best company working with children and families’.About the TeamWe have an informal, hard-working and kind team culture. We’re all passionate about our mission and are determined to create the world’s leading childcare brand. Every team member plays a vital role in achieving our goals and we work together so we can get there quicker. Our approach is fast paced – we are constantly challenging, testing and adapting the way we do things. Our founder is Rachel Carrell, the former CEO of DrThom.com, the world’s largest online doctor service, which she grew to over 1.3m paying users in 3 countries. She’s an Oxford alumn, ex-McKinsey, a Rhodes Scholar and a WEF Young Global Leader. Rachel’s joined by an amazing team with backgrounds including Cambridge, UCL, BCG, KPMG, and some of London’s top startups.

• Series A
• 758 employees
• Founded 2017