Top Series A companies in London

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
• 1.5k employees
• Founded 2014

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

Eagle Eye is on a mission to power the personalized marketing revolution globally. Our AI-powered platform combines loyalty and personalization in one place — helping retailers capture rich first-party data, then use it to deliver smarter, 1:1 marketing at scale.It’s real-time, omnichannel, and built for purpose — enabling the world’s leading retail organizations to deliver more value to their customers in a way that’s simpler for their teams to run and better for their bottom line.

• Series A
• 753 employees
• Founded 2003

Connectd is a people-first platform connecting startups and scaleups with experienced fractional executives, strategic advisors and directors. Using AI-powered insights and smart matching technology, we ensure the right experts are placed with the right companies, so both sides can grow with confidence. In a world shaped by transformative technology, we provide a human-centred ecosystem where companies access the guidance they need to scale, and senior leaders find meaningful, flexible work that puts their experience to powerful use.Since 2019, Connectd has facilitated over 50,000 connections across the UK and US, helping both sides of the ecosystem succeed: startups and scaleups gain trusted leadership at pivotal moments, and senior leaders and executives build dynamic, rewarding fractional careers.

• Series A
• 622 employees
• Founded 2019