Meet London’s Fastest-growing Tech companies

Meet London’s Fastest-growing Tech companies

London maintains its lead as a global growth hub

14 April 2023
Fastest Growing Tech Companies in London

The latest Financial Times ranking of Europe’s fastest-growing companies was released last month. Their seventh annual FT 1000 ranking showcased the companies that have managed to stay, not only afloat, but are flying! 

London has managed to retain its position as the city with the largest number of fast-growing companies, for the seventh consecutive year, with 83 businesses listed, followed by Paris (34) and Milan (33). 

Of the 83 companies listed across the UK, we have narrowed it down to the frontrunners in the Tech sector. Ready to meet the best in London tech?




Founded: 2016 

Industry: Fintech, Financial Services & Insurance

Employees 2018: 8

Employees 2023: 283

Insurance with a sweeter side? Meet Marshmallow. This team has turned car insurance on its head by using artificial intelligence and machine learning algorithms to provide personalised insurance quotes to customers. They exist, not because they love insurance, but because they realised the big insurers were charging certain groups of people way too much – migrants, expats, students, people with low credit scores, and more. Marshmallow decided to make things right and make car insurance more affordable and accessible to underserved communities. Can we get a hell yes? 



Founded: 2001

Industry: Fintech, Financial Services & Insurance

Employees 2018: 17

Employees 2023: 90

First off, free-market currency exchange is a system where foreign currencies are exchanged based on their market value, without any government intervention or regulation. 

Freemarket’s platform allows individuals and businesses to send and receive money in various currencies at competitive exchange rates, with low fees and fast transaction times. Freemarket also offers multi-currency accounts and prepaid cards, allowing customers to manage their money and make purchases in multiple currencies with ease. Additionally, the company provides hedging solutions to help businesses mitigate currency risk and protect against fluctuations in foreign exchange rates.

Founded: 2018 

Industry: IT & Software

Employees 2018: 10 

Employees 2023: 41

We love software for developers by developers. Ever wish your team’s focus could shift from infrastructure management to innovation and growth? Appvia provides a cloud-native platform for deploying and managing applications. Their platform, called “Appvia Wayfinder,” enables businesses to easily build, deploy, and manage cloud-native applications across multiple environments, including public, private, and hybrid clouds. 

Appvia Wayfinder offers features such as automated testing and deployment, continuous integration and delivery (CI/CD), and scalable infrastructure management. Their platform supports multiple programming languages and frameworks, making it a flexible solution for a wide range of businesses and industries. Here’s to streamlining application deployment! 



Founded: 2016 

Industry: Manufacturing

Employees 2018: 11

Employees 2023: 59 

Popsa is the UK’s 3rd fastest growing tech company. They help customers rediscover the meaningful experiences hidden in their photo libraries. We all know the feeling, that moment when your iPhone starts sending you notifications that your iCloud storage is full…  

Popsa’s platform allows users to easily create high-quality photo books and other items such as calendars, prints, and canvases using photos from their mobile devices or social media accounts. Popsa uses advanced algorithms to automatically organise and curate users’ photos, making the design process faster and easier. The best part? They offer speedy shipping and high-quality printing to ensure customer satisfaction.



Founded: 2011 

Industry: IT & Software (Security) 

Employees 2018: 23

Employees 2023: 182

iProov is a global leader in biometric face verification. Their verification and authentication solutions cater for various industries, including banking, government, and healthcare. Their technology uses a combination of artificial intelligence and biometric authentication to ensure that users are who they claim to be when accessing digital services. iProov’s solutions are designed to prevent fraud and increase security in online transactions, and they have been used by a range of impressive organisations, including the UK Home Office and the US Department of Homeland Security.



Founded: 2012 

Industry: IT & Software [Property Management] 

Employees 2018: 35

Employees 2023: 243

Plentific is the only end-to-end marketplace SaaS platform that empowers property managers to launch and manage their own fully flexible contractor solution. Plentific aims to simplify the property management process by providing a central hub for all property-related tasks and connecting property owners with trusted contractors and service providers. Let’s hear it for simple, powerful property repair and maintenance at your fingertips! 



Founded: 2015 

Industry: Fintech, Financial Services & Insurance 

Employees 2018: 33

Employees 2023: 331

Moneybox is a FinTech company that provides a mobile app for individuals to save and invest their money. The app allows users to open a savings account, invest in individual stocks and shares, and also provides options for investing in exchange-traded funds (ETFs) and pensions. Moneybox also offers a cashback program for users who shop with participating retailers through the app. The company aims to make saving and investing more accessible and user-friendly for individuals who may not have traditional investment experience or large sums of money to invest.




Founded: 2015 

Industry: Fintech, Financial Services & Insurance

Employees 2018: 170 

Employees 2023: 293

Paysend is the next-generation payment platform enabling customers and businesses all around the world to pay, hold and send money online anywhere, anyhow and in any currency. Their platform allows users to transfer money to more than 90 countries around the world, with low fees and competitive exchange rates. 

Paysend supports various payment methods, including bank transfers, credit/debit cards, and mobile wallets. The company aims to make sending money internationally simple, fast, and affordable for everyone, regardless of their location or financial situation. The best part? Paysend offers a multi-currency card that enables users to make purchases and withdraw cash in different currencies without paying additional fees. Sign us up! 



Founded: 2015 

Industry: IT & Software

Employees 2018: 57 

Employees 2023: 168 

Attest is a market and brand intelligence company that helps businesses to make data-driven decisions. They offer a range of services, including consumer research, brand tracking, and market analysis. Attest’s platform allows companies to survey targeted audiences quickly and efficiently, providing insights into consumer behaviour and market trends. These insights help businesses to make informed decisions about product development, marketing strategies, and overall business growth.



Founded: 2007 

Industry: Media & Telecommunications

Employees 2018: 34 

Employees 2023: 284

MUBI is a global streaming service, production company and film distributor dedicated to elevating great cinema. They offer a curated selection of classic, cult, and independent films. They feature a constantly rotating library of 30 films, with a new film added every day and a film removed every day, creating a constantly evolving lineup. With MUBI GO, members in select countries can get a free ticket every week to see the best new films in cinemas.

MUBI brags with the biggest community of film lovers, available across 190 countries, with more than 12 million members around the world. In January 2022 MUBI acquired renowned sales agent and production company The Match Factory and Match Factory Productions, further propelling their promising growth trajectory. 


Thought Machine 

Founded: 2017

Industry: Software Development [Banking]

Employees 2018: 81

Employees 2023: 568

This team’s mission is a bold one – to create technology that can run the world’s banks according to the best designs and software practices of the modern age. Thought Machine develops cloud-native technology to help financial institutions modernise their core banking systems. 

Their main product is called “Vault,” a platform that enables banks to offer a range of digital banking services, including account opening, payments, loans, and more. Vault uses a modern microservices architecture and is designed to be highly scalable and secure. Thought Machine has close partnerships with several banks and financial institutions around the world, and its technology is used to power some of the most innovative digital banking solutions available today.



Founded: 2014 

Industry: IT & Software [Financial Crime Compliance]

Employees 2018: 119 

Employees 2023: 462

Compliance doesn’t have to be painful. ComplyAdvantage provides tech solutions for financial crime compliance, putting businesses in control. Their products help businesses identify and prevent money laundering, terrorism financing, and other financial crimes. Some of their services include real-time screening of individuals and entities, risk assessment and monitoring, and data analysis. Their clients include financial institutions, fintech companies, and other businesses in regulated industries. Their suite of configurable cloud services integrates seamlessly to help automate and reduce the frustration of complying with Sanctions, AML and CTF regulations.