BusinessTop 10 Fast-Growing Fintech Companies in the UK in 2024

Discover the top 10 fast-growing fintech companies in the UK for 2024. Stay ahead of the curve and explore the innovative trends shaping the finances.
Updated at10.06.2024
Published at07.06.2024
Matt Sadowski
Matt Sadowski

CEO @ fintech expert and advisor

Table of contents

  1. Introduction
  2. Financial environment for fintech startups in the UK in 2024
  3. Selection Criteria of 10 Fast-Growing Fintech Firms in the UK
  4. Conclusion

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The fintech industry in the United Kingdom is experiencing unprecedented growth, positioning itself as a global leader in financial innovation. With London at the epicenter, UK fintech companies are transforming the world of finance through groundbreaking technologies and innovative financial services. This dynamic sector includes a diverse range of fintech startups and established firms, from peer lending platforms to challenger banks.

In 2024, the financial environment remains challenging yet promising for UK fintech companies. Despite sluggish economic growth and high interest rates, the sector shows remarkable resilience, supported by significant investments and a favorable regulatory framework. Key trends such as the integration of artificial intelligence (AI), a focus on cyber resilience, and adherence to Environmental, Social, and Governance (ESG) principles are shaping the future of fintech in the UK.

Following the success of our 2023 publication on the top 10 fast-growing fintech companies in the UK, we have decided to make this an annual tradition. This year, we again delve into the firms that are leading the charge in financial technology. By examining their unique contributions and the factors propelling their growth, we provide updated insights into the future of fintech in the United Kingdom, continuing our commitment to highlight and support the innovators in this dynamic industry.

Financial environment for fintech startups in the UK in 2024

In 2024, the financial environment for fintech startups in the UK remains dynamic and challenging. The tough macroeconomic conditions, characterized by sluggish economic growth and high interest rates, continue to influence the fintech landscape. Despite these challenges, the UK fintech industry demonstrates resilience, leveraging advancements in technology and regulatory support to drive innovation and growth.

The evolving regulatory landscape post-Brexit presents both challenges and opportunities for fintech companies. Navigating the complex process of repealing and replacing EU laws is a significant task, but the UK government’s focus on creating a supportive environment for fintech is clear. The Financial Conduct Authority (FCA) continues to emphasize compliance with the Consumer Duty, ensuring that firms deliver good consumer outcomes.

One of the key trends in 2024 is the secure adoption of AI and new technologies. Fintech innovative startups are increasingly integrating artificial intelligence (AI) and machine learning (ML) into their operations to enhance customer experiences and streamline processes. However, the National Cyber Security Centre (NCSC) underscores the importance of maintaining robust security measures to mitigate the risks associated with these technologies.

Cyber resilience remains a top priority for UK fintech companies. Firms must align with the FCA and PRA rulebooks, adhere to the Senior Managers and Certification Regime (SMCR), and comply with the Bank of England’s CBEST and CQUEST requirements. Building a strong cyber risk culture, bridging training gaps, and fostering board awareness are essential steps toward achieving better resilience and security.

Environmental, Social, and Governance (ESG) considerations are also increasingly critical. The FCA's anti-greenwashing rule, effective from 31 May 2024, mandates that all sustainability-related references must be fair, clear, and not misleading. Fintech firms are expected to develop and implement climate transition plans and adhere to revised disclosure rules aligned with the International Sustainability Standards Board (ISSB).

Data continues to be a pivotal driver of growth in the fintech sector. Fintech companies must focus on capturing high-quality data, improving data governance, and establishing clear standards for data sharing and usage. Investment in data security and privacy is crucial to maintaining trust and credibility in the market.

Despite economic challenges, the UK fintech market is poised for growth. The resilience of fintech startups, supported by strong investment flows and a favorable regulatory environment, positions them well for continued innovation and expansion. As fintech companies navigate the complex financial environment, their ability to leverage technology, ensure security, and meet regulatory expectations will be key to their success in 2024 and beyond.

Selection Criteria of 10 Fast-Growing Fintech Firms in the UK

Selecting the top 10 fast-growing fintech firms in the UK involves a comprehensive evaluation process based on several key criteria. These criteria ensure that the selected companies are truly exceptional in their growth and impact within the financial technology sector. Here are the specific criteria used:

  • Fintech, Insurtech, RegTech or Other Specialization in Financial Services Empowered by Technology: Companies were chosen based on their specialization within the financial services industry, particularly those leveraging cutting-edge technology to deliver innovative solutions. This includes firms operating in fintech, insurtech, and other related areas that use technology to enhance financial services.

  • Company Size from 50 to Approximately 250 Employees: To focus on companies that are in a significant growth phase but still maintain a startup or scale-up dynamic, we selected firms with employee counts ranging from 50 to approximately 250. This range indicates a substantial team size that supports rapid development and expansion.

  • Growth in Headcount Higher Than 45%: A critical indicator of a company's growth trajectory is the increase in its workforce. We selected companies that have experienced a headcount growth of more than 45% from June 2023 to June 2024, demonstrating their rapid expansion and increasing market presence.

  • UK-Based Headquarters: To highlight the thriving fintech ecosystem within the United Kingdom, we only considered companies with their headquarters based in the UK. This criterion ensures that the companies are contributing directly to the UK's fintech industry.

  • Mobile Reality Subjective Opinion and Assessment: Leveraging our deep fintech experience, Mobile Reality has applied subjective opinion and expert assessment to evaluate the potential and performance of these companies. Our insights help identify firms that are not only growing rapidly but also showing promise in innovation and market disruption.

Additionally, LinkedIn and Crunchbase reports were utilized for data verification. These platforms provided reliable information on company size, growth metrics, and other relevant data, ensuring the accuracy and credibility of our selection.

By adhering to these criteria, we have identified the top 10 fast-growing fintech firms in the UK that are set to make a significant impact in 2024 and beyond.

The unique selection of the top fintech companies in the UK



Growth: 223% (from 21 to 68)

Flyfish is pioneering the future of payments by developing frictionless financial technology solutions. The company's offerings enable customers to launch and scale their payment systems efficiently, addressing the evolving needs of businesses and consumers. With a strong emphasis on innovation and seamless integration, Flyfish is positioned as a leading fintech company in the UK, transforming how financial transactions are conducted.

Flyfish’s platform is designed to be highly customizable, catering to a wide range of financial services from retail payments to large-scale enterprise solutions. Their technology focuses on enhancing user experience by reducing transaction friction and providing secure, scalable, and compliant payment infrastructure. By continuously innovating and adapting to the latest market trends, Flyfish aims to empower its clients to stay ahead in the rapidly evolving financial landscape.



Growth: 110% (from 56 to 118)

Kita is a pioneer in carbon insurance, specializing in insurtech solutions that reduce carbon risk. Our mission is to scale high-quality carbon projects by offering a portfolio of insurance products, ultimately accelerating positive climate impact. As a Lloyd’s of London coverholder, Kita integrates advanced technology to provide financial security in carbon credit transactions, driving substantial capital flows and supporting sustainability in the fintech industry.

Kita’s innovative approach focuses on mitigating the risks associated with carbon credit transactions, enabling greater investment in carbon reduction projects. By offering comprehensive insurance products, Kita helps bridge the gap between carbon projects and investors, ensuring that environmental initiatives are financially viable and attractive. Their solutions are designed to provide transparency, reduce uncertainty, and foster confidence in the burgeoning carbon market, thus playing a crucial role in the global effort to combat climate change.



Growth: 110% (from 47 to 99)

Zing is a revolutionary mobile banking platform designed to simplify international money management. Their app allows users to hold, convert, spend, and send multiple currencies with ease. As a fintech leader, Zing is dedicated to providing secure, efficient, and user-friendly financial services that take the worry out of managing international finances.

Zing’s platform stands out for its seamless integration of multi-currency functionalities, enabling users to handle their global financial needs in one place. By offering competitive exchange rates, low transaction fees, and real-time currency conversion, Zing enhances the financial mobility of its users. The app's intuitive design and robust security measures ensure a smooth and secure banking experience. With its innovative approach to mobile banking, Zing is setting new standards in the fintech industry, making international financial management accessible and hassle-free for everyone.

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Growth: 81% (from 120 to 218)

9fin is revolutionizing access to debt market intelligence by providing a faster, smarter way to find and analyze financial data. Trusted by major investment banks and asset management firms, 9fin utilizes artificial intelligence to organize and interpret global fixed income financial data. Their platform predicts market activities, delivers comprehensive market intelligence, and provides rapid covenant analysis. As a key player in the fintech landscape, 9fin empowers financial professionals with the insights needed to stay ahead in the competitive market.

9fin’s advanced AI-driven platform aggregates data from over 2,000 sources, enabling users to spot new deals, understand complex legal risks, and receive vital insights before anyone else. By streamlining the process of analyzing credit and financial information, 9fin significantly reduces the time and effort required for thorough market analysis. Their tools allow clients to make informed decisions quickly, helping them to secure mandates and manage risks effectively. With a commitment to innovation and precision, 9fin is transforming the way financial data is utilized in the debt markets.



Growth: 63% (from 172 to 281)

Guavapay is dedicated to building a global financial ecosystem that empowers individuals and businesses to take control of their financial lives. Through its MyGuava App and MyGuava Business App, Guavapay simplifies banking and financial services, making them more accessible and affordable worldwide. As a prominent fintech company, Guavapay leverages innovative technology to enhance financial inclusion and empower users globally.

Guavapay’s comprehensive suite of financial products includes seamless money transfers, multi-currency wallets, and real-time payment solutions designed to meet the diverse needs of users. By integrating cutting-edge technology with user-friendly interfaces, Guavapay aims to provide a superior financial experience that transcends traditional banking limitations. Their commitment to security, transparency, and customer satisfaction ensures that individuals and businesses can manage their finances with confidence and ease, positioning Guavapay as a leader in the fintech industry.

Insignis Cash


Growth: 63% (from 72 to 116)

Insignis Cash specializes in active management of cash deposits, helping clients maximize returns on their savings. By offering bespoke solutions tailored to individual priorities for return, liquidity, and security, Insignis Cash serves businesses, charities, and individuals with comprehensive savings management. Their Digital Banking Network provides access to leading savings products, establishing Insignis Cash as a significant player in the UK fintech sector.

Insignis Cash's platform is designed to monitor the dynamic savings market and deliver personalized solutions that adapt to economic shifts. Their service ensures clients benefit from optimal interest rates across multiple banking partners, all through a single, easy-to-use interface. With a focus on transparency and efficiency, Insignis Cash empowers clients to make informed decisions about their cash holdings, enhancing their financial security and growth potential. By bridging the gap between traditional savings accounts and innovative digital solutions, Insignis Cash is redefining cash management in the financial technology landscape.


Growth: 59% (from 156 to 249) is leading the charge in real-time payments with its next-generation payment network. By uniting domestic schemes into a single, harmonized global standard, offers instant, interoperable payment solutions. Their innovative platform is driving the shift to a real-time financial era, making a crucial player in the fintech industry.'s payment infrastructure is designed to facilitate seamless and secure transactions, enabling businesses and consumers to move money instantly across borders. Their technology not only enhances the efficiency of payments but also ensures compliance with international standards, providing a reliable and scalable solution for global financial transactions. By focusing on interoperability and real-time processing, is setting new benchmarks in the fintech sector, helping to create a more connected and efficient global payment ecosystem.



Growth: 55% (from 36 to 56)

TreasurySpring is unlocking multi-trillion dollar wholesale money markets with its regulated Fixed-Term Fund platform. Connecting cash-rich firms to institutional borrowers, TreasurySpring provides secure, fixed-term exposure to diverse assets. Their fintech solutions help clients diversify risk and increase returns, positioning TreasurySpring as an essential component of the UK's financial services landscape.

TreasurySpring’s platform offers a simple and efficient way for firms to access high-quality short-term investments, bridging the gap between traditional banking products and capital markets. By leveraging advanced digital infrastructure, TreasurySpring delivers transparent and customizable investment options that cater to the specific needs of each client. Their innovative Fixed-Term Funds allow companies to optimize their cash management strategies, ensuring better liquidity management and enhanced financial stability. TreasurySpring is at the forefront of transforming cash investment, providing a valuable tool for financial institutions and corporate treasuries alike.



Growth: 52% (from 108 to 165)

Cushon is at the forefront of digital savings and investment, offering innovative solutions that simplify financial planning. Their app provides real-time access to a variety of financial products, helping users manage their savings and investments efficiently. As a leading fintech company, Cushon leverages technology to enhance financial wellness and accessibility for UK consumers.

Cushon's platform is designed to make saving and investing straightforward and engaging, using intuitive tools and personalized guidance to help users achieve their financial goals. Their range of products includes ISAs, pensions, and other investment accounts, all managed through a user-friendly interface. By integrating cutting-edge technology with financial expertise, Cushon ensures that users can easily navigate their financial journeys. With a strong focus on customer experience and financial education, Cushon is transforming the way people in the UK think about and interact with their savings and investments.



Growth: 47% (from 68 to 100)

Perenna is transforming the UK mortgage market with its innovative digital mortgage bank. Offering flexible, long-term fixed rate mortgages, Perenna provides consumers with payment certainty and protection against interest rate fluctuations. Their advanced technology platform ensures rapid mortgage approvals and seamless tracking, making Perenna a key player in the fintech and financial services industry.

Perenna’s groundbreaking approach addresses the inefficiencies and rigidity of traditional mortgage products, offering borrowers unprecedented stability and transparency. By leveraging cutting-edge technology, Perenna streamlines the mortgage application process, significantly reducing approval times and enhancing user experience. Their commitment to innovation and customer-centric solutions is revolutionizing the mortgage landscape in the UK, providing a model for the future of home financing. With a focus on long-term financial security and customer empowerment, Perenna is redefining the standards of the mortgage industry.


The UK fintech sector continues to thrive in 2024, demonstrating resilience and innovation in the face of economic challenges. The top 10 fast-growing fintech companies highlighted in this article exemplify the dynamic nature of the industry, each contributing unique solutions that push the boundaries of financial technology. These companies, leveraging advancements in AI, mobile banking platforms, and sustainable finance, are not only transforming financial services but also setting new standards for the future.

Despite a tough macroeconomic environment, the supportive regulatory framework and significant investment inflows have enabled these firms to achieve impressive growth. Their success underscores the importance of integrating cutting-edge technology, maintaining robust cyber resilience, and adhering to Environmental, Social, and Governance (ESG) principles. By focusing on innovation and customer-centric solutions, these fintech companies are poised to continue their upward trajectory, further solidifying the UK’s position as a global fintech hub.

As we look ahead, the ongoing evolution of the fintech landscape promises even more opportunities for growth and transformation. The selected companies, with their remarkable achievements and strategic vision, are well-positioned to lead the charge in shaping the future of financial services. Investors, regulators, and industry stakeholders will undoubtedly keep a close eye on these trailblazers as they drive the next wave of fintech innovation in the United Kingdom.

Fintech and Financial Software Development Insights

Are you intrigued by the rapidly evolving world of fintech and financial software development? At Mobile Reality, we take pride in our extensive knowledge and experience in this dynamic field. We navigate complex challenges, implement innovative strategies, and develop groundbreaking solutions in fintech. Our carefully curated selection of articles offers in-depth perspectives on key aspects of fintech and financial software development:

Explore these comprehensive resources to deepen your understanding of the fintech sector. If you have any questions or are interested in exploring partnership opportunities in fintech software development, please contact our sales team. For those aspiring to join our innovative team, visit our careers page to submit your CV. Join us in driving the future of fintech and financial software development!

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Matt Sadowski

CEO of Mobile Reality

CEO of Mobile Reality

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