Top 17 React Development Companies In The UK (2025)

Looking to find the very best React development companies in the UK?

A quick Google search brings up 178,000,000 results, making the process of choosing the right development partner overwhelming and time-consuming.

That’s why we’ve created this guide—to simplify your search. We’ve handpicked the top React development companies in the UK to help you find the perfect match for your project needs.

Let’s dive in!

What makes a top React Development Company?

How did we choose the best React developers in the UK?

No, we didn’t just pick the top results from Google—search rankings don’t always reflect quality. Instead, we carried out in-depth research based on the following key factors:

• Project Case Studies: Do these companies actually deliver? We analysed their portfolios to see real-world applications of React and assess whether they could replicate similar success for your business.
• Technical Expertise: A strong React team isn’t just about writing code. We looked for developers with proven skills in building scalable, high-performance applications using React, often alongside tools like Redux, Next.js, or TypeScript.
• Client Retention: A loyal client base is one of the clearest indicators of reliable, high-quality work. We gave preference to companies with long-standing relationships and positive client feedback.

Top React Development Companies

1. 6B

Yes, that’s us. We’re a leading React development company based in the UK, known for building fast, scalable, and future-ready digital products. Recognised as one of the top React agencies, we specialise in creating high-performance React applications that help ambitious businesses grow.

At 6B, we partner with forward-thinking organisations to build powerful web and mobile solutions using modern JavaScript technologies—especially React. Our core services include:

• React.js & Next.js Development
• Custom Web & Mobile Applications
• API Development & Systems Integration
• UI/UX Design & Prototyping
• Cloud Infrastructure & DevOps

We work across a variety of sectors, including:

• Healthcare & Public Sector
• Fintech & LegalTech
• Education
• Enterprise SaaS
• eCommerce

Some of the clients we’ve worked with include the NHS, ITV, Sedgwick, and Franke—delivering mission-critical solutions that are robust, secure, and user-centric.

Why 6B?

• 50+ person expert team and growing
• UK-based with a national and international footprint
• Trusted by public sector and private enterprises alike
• Deep React expertise, backed by a full-service digital delivery team

If you’re looking for a React development company that delivers results—at scale and with technical excellence – click the button below to get in touch. Or, if you’d like to learn more about our React development services, then check out our service page here.

Get in touch with our React Development team

2. Lightflows

Lightflows is a UK-based development agency specialising in React.js, known for creating high-performance, scalable web and mobile applications. They use a component-based approach to build reusable, maintainable interfaces and offer end-to-end services from development to performance optimisation.

3. Sigli

Sigli is a full‑service digital engineering company based in the UK with deep expertise in React.js and its ecosystem. Their teams include seasoned React developers who build and maintain high‑quality, scalable web applications using TypeScript, React and frameworks like Next.js. They’re experienced in optimising performance, implementing state management (Redux, React Query), server‑side rendering and seamless UI integration. Sigli’s React specialists collaborate closely with backend and design teams to deliver maintainable, performant front ends for complex platforms.

4. TRIARE

TRIARE is a bespoke software development company in the UK offering strong expertise in React.js web development. Their developers build fast, scalable and interactive web applications using modern React techniques like component-based architecture, virtual DOM optimisation, and server-side rendering. With experience in TypeScript, Next.js and React 18 templates, they craft maintainable front ends tailored to client needs. Their React specialists work closely with UI/UX, backend and QA teams to ensure seamless, high-performance user interfaces.

5. React Development Agency

React Development Agency is a UK-headquartered team of seasoned React.js specialists delivering custom web and mobile applications with a focus on high performance and scalability. They use modern React techniques—from component-based design and responsive UIs to server-side rendering and SEO-friendly coding—to build fast, maintainable interfaces. Their services span bespoke React solutions, React Native mobile apps, and ongoing maintenance and optimisation to ensure apps remain secure and efficient. Working closely with designers and clients, they aim to bring ideas to life through collaborative, award-winning React development.

6. Unified Infotech

Unified Infotech is a global digital engineering firm with offices in the UK. Established in 2010, with deep expertise in React.js and React Native. Their React team builds dynamic, high-performance single-page applications using a component-based architecture, virtual DOM optimisation, and robust state management tools like Redux and Context API. They also offer end-to-end services—from custom React app development, server-side rendering and SEO‑friendly front ends to migration, testing, and ongoing maintenance. Their specialists collaborate closely with UI/UX designers and backend teams to deliver scalable, maintainable, and secure front-end solutions.

7. Plavno

Plavno is a software development company with offices in the UK and over 15 years’ experience offering dedicated React.js and React Native expertise. Their front-end team—hand‑picked from the top 3 % of talent—delivers full‑cycle React solutions, including custom web apps, migrations, consulting, plugin integrations and cross‑platform mobile apps. They leverage modern technologies like TypeScript, Redux, Next.js and React Developer Tools to build performant, maintainable and scalable interfaces. With rapid onboarding and end‑to‑end services, Plavno ensures high‑quality React-driven experiences for web and mobile.

8. Griffiths Waite

Griffiths Waite is a UK-based enterprise software firm specialising in bespoke React.js development. Their team builds scalable, maintainable front ends using modern React practices and a phased, low-risk migration approach. They also offer consulting, optimisation, and long-term support for complex enterprise systems.

9. Instinctools

Instinctools is a globally‑operating software engineering firm with offices in the UK and over 25 years’ experience, and a strong track record in React.js development. Their React specialists build dynamic, scalable and SEO‑friendly web applications using component‑based architecture, virtual DOM optimisation and frameworks like React Native and Next.js. Whether migrating legacy systems, developing enterprise platforms, e‑commerce sites or PWAs, they offer end‑to‑end React solutions from design and coding right through to maintenance and optimisation. Their teams adapt seamlessly to client workflows, ensuring timely delivery and high‑quality results.

10. Goodcore

GoodCore is a UK-based software development company offering specialised React.js talent for hire. Their experienced React developers build scalable, maintainable web applications using modern practices like component-based architecture, TypeScript, Redux, and best-in-class testing. They provide end-to-end development services—from custom UI creation and API integration to optimisation and long-term support—ensuring robust, future-proof front ends for client projects.

11. Blue Frontier

Blue Frontier is a UK digital agency with a strong in‑house React.js and React Native development capability. Their team builds dynamic, responsive user interfaces for both web and mobile, using modern React techniques like component‑based architecture, virtual DOM optimisation, and server‑side rendering. They offer full‑stack support across discovery, design, development, deployment and ongoing maintenance, seamlessly integrating React front‑ends with APIs and backend systems. Their seasoned React developers focus on performance, SEO friendliness and smooth user experiences for enterprise and consumer platforms.

12. Software Planet Group

Software Planet Group (SPG) is a UK-based software firm with nearly 20 years’ experience and a dedicated team of over 50 React specialists. They deliver end-to-end React solutions—covering bespoke web apps, real-time SPAs, legacy modernisation, UI/UX design, testing and cloud deployment. Their React developers excel in frameworks like Next.js, Redux, React Router and React Native to build scalable, high-performance, SEO-friendly interfaces tailored for industries from healthcare to finance. SPG’s full-lifecycle approach ensures timely delivery, ongoing optimisation and long-term support for complex React projects.

13. Dawn

Dawn Creative is a Manchester‑based agency with strong capabilities in React.js development, crafting bespoke, reusable interface components that elevate both branding and user experience. They integrate React seamlessly with APIs and modern web technologies, ensuring dynamic, performance‑focused solutions. Operating with a direct developer‑client approach, they manage full‑cycle React projects—from UI design and development through deployment and optimisation—without relying on intermediaries. Their team supports long‑term React maintenance, making sure front ends remain scalable, responsive and SEO‑friendly.

14. Ficode

Ficode is a UK-based software consultancy with strong expertise in React.js, focusing on enterprise-grade, high-quality single-page applications and progressive web apps. Their React developers leverage component-based architecture, virtual DOM and server-side rendering to build responsive, scalable and SEO‑friendly interfaces. They offer the full React ecosystem—from custom app development and third-party API integration to migration, testing, deployment and maintenance. Their developers are skilled in modern tools like TypeScript, Next.js, Redux and GraphQL to deliver bespoke, performance-optimised solutions.

15. London App Development

London App Development (LAD) is a UK-based agency specialising in React Native, delivering seamless, cross-platform mobile applications for iOS and Android. Their team offers full-service expertise—from initial consulting and custom app creation to UI/UX design, API integration, migration, and ongoing support—ensuring fast, native-like performance and cost-effective development. With hot reloading, reusable components and an emphasis on efficiency, they accelerate time-to-market while maintaining high quality. They also guide clients through strategic decisions on using React Native to modernise or build apps from scratch.

16. Square Root Solutions

Square Root is a London‑based software development company with a seasoned team of in‑house ReactJS specialists. They build high‑performance, scalable web and mobile applications using modern React practices—component‑based architecture, virtual DOM optimisation, server‑side rendering and SEO‑friendly techniques. Their services include custom React front‑ends, migration from legacy systems, React Native mobile apps, consulting and long‑term support. With over a decade of experience and more than 300 JavaScript projects delivered, they ensure maintainable, efficient React solutions for businesses.

17. Tiksom

Tiksom is a UK-based digital agency specialising in React.js development, crafting interactive, high‑performance web applications with SEO‑friendly, component-driven architecture. Their React team delivers end-to-end services, including custom UI development, seamless API integration, state management and migration of legacy systems. They also offer rigorous testing, ongoing maintenance and optimisation to ensure applications remain scalable, maintainable and user-centric.

Why Hire One of the Best React Development Companies?

If you’re aiming to build a fast, scalable, and user-friendly digital product, the right React development company can turn your vision into reality.

Partnering with a top-tier React agency ensures a smooth collaboration, high-quality code delivered on time, and a product built to grow with your business.

At 6B, our skilled React developers work as an extension of your team—offering expert guidance, efficient architecture, and modern solutions tailored to your needs.

From planning and design to development and optimisation, we offer a full-cycle React service that delivers powerful results.

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