Top ReactJs Development Companies in the United Kingdom
Goodfirms has reviewed 396 ReactJs Development Companies in the United Kingdom as of November 2026. The top-ranked firm is Instinctools (4.9 stars, 27 verified reviews, $25 - $49/hr, founded 2000, London). Across the category, the median hourly rate is $37, median client rating is 4.9, and 22% of firms employ 50+ members. Explore the vetted ReactJs Development Companies in the United Kingdom below, compare their strengths, and connect with the provider best suited to your requirements.
ReactJs as a library surely has its perks but that is not enough. Even if you choose the library, how are you supposed to know that the team of React Js developers you selected is going to live up to your expectations? To ensure that you make the right decision, consider some of the essential factors while going through the list of React Js development companies in United Kingdom. For instance, the React Js development company in question should guarantee on time delivery, active maintenance and support, and an experienced team of developers.
If you don’t find this information enough to hire React Js developers, then check out the following list by the Goodfirms team. You can find trustworthy React Js development services on the page.
Goodfirms has verified 396 ReactJs Development Companies in the United Kingdom - part of 9,287+ React.js Development Companies, each passing Goodfirms' 4-step verification process (background check, client interviews, portfolio audit, ongoing quality review). Listings marked "Sponsored" are agencies that pay for premium placement - sponsorship does not affect star ratings or review content.
Top 10 at Glance
Compare the highest-ranked firms first side by side.
List of the Best React Js Developers in the United Kingdom with reviews
Using AI Tools
Claude
Midjourney
Wall & Fifth (W&5) is a senior-led UK software studio building custom apps, MVPs, marketplaces, SaaS, and AI products for founders and ambitious businesses. Rather than templates or no-code, the studio engineers real production software from scratch, delivers it at a fixed price, and hands over the full codebase so clients own what they paid ... read Wall & Fifth reviews & insights
$100 - $149/hr2 - 92025London, United KingdomWhy Wall & Fifth?
- Senior-led, no juniors on your build
- Fixed price, full code ownership, no lock-in
- We build & run our own products too
Using AI Tools
ChatGPT
Claude
GitHub Copilot
Gemini
Cursor
Webermelon is a London-based web design and software development agency founded in 2019, located in Covent Garden, UK. We help startups, small businesses, and growing companies build scalable digital products and high-performance websites.Our core services include custom software development, SaaS MVP development, eCommerce development, mobile app development, UI/UX design, and website optimization.Our work is driven ... read Webermelon Limited reviews & insights
$50 - $99/hr10 - 492019London, United KingdomWhy Webermelon Limited?
- Custom software built for business growth
- Scalable solutions that grow with you
- Reliable team. Zero project headaches
Using AI Tools
OpenAI Codex
Claude
OpenCode
Fostech Systems Ltd is an independent software development and technology consultancy based in Matlock, Derbyshire, working remotely with startups, growing businesses and enterprise teams.Services include bespoke web and mobile applications, internal business tools, API and systems integrations, workflow automation, discovery and ongoing software support. Engagements can start with a small integration, an existing prototype or ... read Fostech Systems Ltd reviews & insights
$150 - $199/hrFreelancer2026Matlock, United KingdomWhy Fostech Systems Ltd?
- Work directly with an experienced founder
- Clear scope and costs, delivered in stages
- Client ownership of systems and accounts
Using AI Tools
Claude
ChatGPT
Gemini
GitHub Copilot
Forge Digital Technology helps small and growing businesses replace manual processes with practical, tailored technology. We design and build bespoke business applications, portals, workflow automation and websites, alongside Microsoft 365, SharePoint and cloud solutions.Based in Essex and working with businesses across London and the UK, our focus is on understanding how a business actually works ... read Forge Digital Technology reviews & insights
NAFreelancer2026Hainault, United KingdomWhy Forge Digital Technology?
- Buildt around how your business actually works
- Practical solutions that save time and admin
- Direct, responsive support from start to finish
Our team of expert software developers create besopoke software products, apps, operational systems for SMEs, enterprise, funded startups and the public sector using microsoft and javascript technologies across our Indian subcontinent delivery centres. Since 2016 the Team at Cyber has been developing bespoke software and we have established ourselves as a trusted digital partner. We ... read Cyber reviews & insights
$50 - $99/hr10 - 492016London, United KingdomUsing AI Tools
AI tools
Campfire Labs is a boutique tech studio based in Wales, working with clients across the UK. We're creative people who fell for tech and know it inside out.Founded by Adrian Davies, who has spent 15 years in cloud, AI and DevSecOps across government, defence and the private sector. Before Campfire Labs he built secure cloud ... read Campfire Labs reviews & insights
$50 - $99/hrFreelancer2026Mildenhall, United KingdomWhy Campfire Labs?
- Straight costs before we build
- Something real to tap early on
- We host it and keep it running
Chelsea Apps is a mobile and web app development agency with over 70 million app downloads and generating in excess of £250m for our clients. We’re a team that only work on projects that we believe users will love. It’s not about building any old thing so we can grow our agency, we want to ... read Chelsea Apps reviews & insights
$100 - $149/hr10 - 492010London, United KingdomKuhnic AI builds AI voice agents, workflow automations, and custom applications for US businesses in legal, healthcare, and real estate. Founded in 2022 and acquired by Transputec, we combine startup speed with enterprise infrastructure to deploy production-ready AI systems. Our voice agents handle inbound and outbound calls with human-level conversation, cutting operational costs while improving ... read Kuhnic AI reviews & insights
$100 - $149/hr10 - 492022London, United KingdomWhy Kuhnic AI?
- Clients Save Over 1000 Hours Annually
- Voice Agents Live in Under 2 Weeks
- Backed by Transputec Enterprise Scale
Using AI Tools
ChatGPT
Claude
Digital Royalty is a UK custom software agency for companies whose operations have outgrown spreadsheets, off-the-shelf tools and manual processes. We build automations, API integrations, single-page applications and operational dashboards — the bespoke software a business runs on day to day: connecting systems that don't talk to each other, replacing legacy or spreadsheet-led processes, and ... read Digital Royalty reviews & insights
$100 - $149/hr2 - 92021Portsmouth, United KingdomWhy Digital Royalty?
- Visible delivery, scope and time
- Maintainable bespoke software
- Long-term accountable partnership
Who we are, our approach to what we do and our vision for how we improve the world around us. Since 2010, we’ve been on a mission to help people, businesses, and communities thrive through digital innovation. From the start, we’ve been all about creating custom solutions that empower people to live healthier, happier, more ... read Vidatec reviews & insights
$25 - $49/hr10 - 492011Glasgow, United KingdomUsing AI Tools
In-house AI agents
Code2Box Ltd is a UK software and AI automation agency, registered in London. We build custom websites, bespoke software platforms, AI receptionists and workflow automation for businesses across the UK, Europe and the Middle East, at fixed prices agreed up front: websites from £1,999, custom platforms from £14,950, care plans from £99 a month. You ... read Code2Box reviews & insights
NA2 - 92012London, United KingdomWhy Code2Box?
- Fixed price agreed before any code is written
- You work directly with the engineer
- You own the code, live in weeks
We're a digital product studio with a fintech and data storytelling focus. Prioritising relationships, we work closely with your internal team to deliver successful outcomes. You can expect a boutique, fiercely friendly service founded on honesty, collaboration and efficiency. ... read Caboodle Digital Ltd reviews & insights
$150 - $199/hr2 - 92016London, United KingdomWelcome to OD-Software, where we specialize in Fintech development services. Our expertise spans a range of offerings, including decision-making systems, data preparation, payment gateways, and payment orchestration, wealth management development services etc. As an IT company dedicated to web development and consulting, our primary mission is to deliver industry-standard software development services while deeply understanding ... read OD-Software reviews & insights
$25 - $49/hr10 - 492021London, United KingdomUsing AI Tools
Claude
Ownly Digital builds the software a business actually runs on.Most businesses do not have one system. They have a handful of good tools that each do their bit, and somebody in the middle moving information between them by hand: reading an enquiry here, typing it there, updating a sheet, sending the confirmation. That copying becomes ... read Ownly Digital Limited reviews & insights
$50 - $99/hr2 - 92026Leyland, United KingdomWhy Ownly Digital Limited?
- Apps in both stores, systems running businesses
- We build it, then we run it and keep it working
- We ship real products, not just websites
Using AI Tools
Claude
Devs and Visuals is a software and AI development studio based in Kington, Herefordshire, working remotely with clients in the UK and abroad.AI and automation: assistants that answer from your own documents, invoice and document data extraction, workflow automation, computer vision such as face verification, and forecasting dashboards.Product engineering: web applications (React, Next.js, Node.js, Laravel), ... read Devs and Visuals reviews & insights
< $25/hr10 - 492024Kington, United KingdomWhy Devs and Visuals?
- Fixed quote after a written scope
- We build and run our own SaaS products
- 30 days of free bug fixes after launch
GenMD creates AI-Powered tools for clinicians. Improving training and reducing workload through custom apps designed specifically for healthcare workers.Experience immersive learning with our AI-driven medical simulators. Enhance clinical skills across various specialties, ensuring preparedness for real-world scenarios.Utilise our advanced AI tools to streamline the differential diagnosis process, enhancing clinical decision-making and improving patient outcomes. ... read GenMD reviews & insights
NA2 - 92023Manchester, United KingdomFor 16 years we've been helping local and global organisations build better user experiences. Everything we do is about helping organisations become digital by default, able to offer the best user experience in their market. ... read Visualize Systems reviews & insights
NA10 - 492004Cambridge, United KingdomWe specialise in design and implementation of software systems industries tailored to meet your specific needs meeting high quality standards. ... read KmTec Ltd reviews & insights
NA2 - 9London, United KingdomYour organisation needs a digital strategy to compete in the modern market, and we pride ourselves on understanding your enterprise to deliver an ideal business intelligence solution with guaranteed ROI. Automation, communication, and data manipulation through sleek cloud-based applications, artificial intelligence, and API integrations will contribute to your enterprise’s dream transformation. Why work with us? ... read Shoothill reviews & insights
$100 - $149/hr10 - 492006Shrewsbury, United KingdomMad Devs is an international tech company that designs, develops, and deploys innovative software solutions. We serve businesses of all sizes and industries: from finance to transport and logistics, security, education, and advertising. Our goal is to help companies grow quickly and scale seamlessly. We offer not just quality coding, but technical partnership that implies ... read Mad Devs reviews & insights
$50 - $99/hr50 - 2492016Cambridge, United KingdomWe are a fast-growing Software & Automation development company based in the Midlands. Our experienced team creates digital products that streamline internal processes, putting an emphasis on analytics & automation to help partners improve service delivery, customer experience or reduce costs. Based in Coventry, & London we deliver for organisations ranging from the NHS & ... read Imobisoft UK reviews & insights
$50 - $99/hr10 - 492007Birmingham, United KingdomCorner Case Technologies specializes in building intuitive, standalone, or integrated with scalable back-end systems web or mobile applications using both proven and cutting-edge technologies. By facilitating on lean-agile-based processes, our team is keen to deliver the entire Software Delivery Lifecycle from requirements capture, designs and prototyping, through rapid development sprints to the product launch in ... read Corner Case Technologies reviews & insights
NA50 - 2492016London, United KingdomWhether you want to consult on an idea, add mission-critical capabilities, expand your in-house development team, or you need to hand over an entire project – we’ve got you covered. ... read Meta8 reviews & insights
$100 - $149/hr2 - 92021London, United KingdomUsing AI Tools
ChatGPT
Suffescom has established strong expertise in AI-driven applications, software development, and early adoption of emerging technologies in London, UK, enabling enterprises to automate, enhance user experiences, and generate data-driven insights through advanced technologies Our core services include custom iOS, Android, and cross-platform app development, along with tailored enterprise software, web applications, and cloud-driven solutions. We ... read Suffescom UK reviews & insights
$25 - $49/hr50 - 2492013London, United KingdomWhy Suffescom UK?
- 13 years of proven expertise
- Custom, scalable digital solutions
- Expertise in AI & machine learning
Using AI Tools
Tecveq Ai Tools
ChatGPT
Claude
Gemini
Perplexity
- + 6 More
Tecveq is a software development and AI solutions company helping startups, SMEs, and enterprises transform their businesses through innovative technology. We specialize in custom software development, AI integration, machine learning solutions, AI chatbots, business automation, and intelligent digital platforms tailored to unique business requirements.Our expertise includes web development, mobile application development, full-stack development, SaaS applications, ... read Tecveq reviews & insights
NA10 - 492025London, United KingdomWhy Tecveq?
- AI Integration & Chatbot Solutions
- Complex Web & Software Projects
- Enterprise & SaaS Development
Using AI Tools
ChatGPT
Claude
Clientflow is a UK software studio. We design and build bespoke client portals, internal systems, dashboards and apps for established teams who have outgrown the tools they are renting. Every engagement starts with a blueprint call: twenty minutes, free, with the people who would scope the build. No sales team. It ends in a firm ... read Clientflow reviews & insights
$100 - $149/hr2 - 92023Southampton, United KingdomWhy Clientflow?
- You own the code and every account, from week one
- Fixed price, agreed before the build starts
- No sales team. You talk to the people building it
Using AI Tools
Claude
Cursor
ChatGPT
Perplexity
Replit
Strange Tech is a venture studio and technical co-founder for founders and agencies, based in London and Dubai. We design, build, and ship software — mobile apps (Flutter), web platforms (React/Next.js), backends (Laravel), and AI features — taking an idea from MVP to launched product. Founders bring the idea; we build the company: product strategy, ... read Strange Tech reviews & insights
$100 - $149/hr2 - 92019London, United KingdomWhy Strange Tech?
- 16 ventures built, over 12M GBP in portfolio value
- Equity-aligned. We build like owners
- MVP to launch in 10-14 weeks
IDS Group is a full-cycle software development company delivering scalable web and mobile solutions for startups and growing businesses across the US, UK, and Europe. We partner with funded startups and SMBs to design, build, and scale digital products — from early-stage MVPs to complex, business-critical and high-load systems. Our approach combines strong engineering, clean ... read IT DEV STAFF reviews & insights
$25 - $49/hr10 - 492016London, United KingdomUsing AI Tools
ChatGPT
Claude
Gemini
Perplexity
Custom web platforms and production-grade applications for businesses that have outgrown their tools. We build the backend systems that actually run your operations — recruitment portals, data platforms, conference systems — with AI where it creates real leverage, not where it sounds impressive. Our structured process starts with a Discovery Sprint to scope the build, ... read Rocking Tech reviews & insights
$100 - $149/hr2 - 92019London, United KingdomWhy Rocking Tech?
- We tell you what not to build before you spend
- NHS, universities & startups trust our delivery
- Fixed pricing, no scope creep, founder-led
Gooii Ltd. is an app & web development agency specialising in Mobile Ticketing, AR & VR as well as apps and websites for commercial, education and heritage. With our head offices in Nottingham. Established in 2001, we develop for mobile & desktop platforms. Our work is targeted at iPhone, iPad, Android, PC & Mac users. ... read Gooii reviews & insights
< $25/hr2 - 92001Nottingham, United KingdomAt We Make Waves, we refuse to be spectators while organizations grapple with digital products that miss the mark, exceed budgets, and resist adaptation. We're here to create digital products that truly make waves. In an industry where most endeavors fall short of their potential, we offer a proven approach to web and mobile application ... read We Make Waves reviews & insights
$100 - $149/hr2 - 92010London, United KingdomCSI Media is an award-winning web and software development company with 23 years’ experience in delivering bespoke, advanced solutions for mid-market and enterprise-level companies across the UK. ... read CSI Media reviews & insights
$50 - $99/hr10 - 491998Crewe, United KingdomSEO Leaders is an SEO agency that was founded by Andrew Craig back in 2016. Having worked in digital for over 20 years, including founding one of the (now) largest car forums in the world, he turned his attentions to running a digital agency full time. To that end SEO Leaders is comprised of highly ... read SEO Leaders reviews & insights
$25 - $49/hr2 - 92016Sheffield, United KingdomCircle was formed by a group of talented individuals who have worked together for over a decade bringing significant expertise around designing, building, delivering and maintaining cloud software solutions. We are a Ruby on Rails show with deep experience around intuitive application design, both on the back-end and front-end, managing the architecture challenges that a ... read Circle Software & Design reviews & insights
$100 - $149/hr2 - 92021Nottingham, United KingdomWe’re strategists, designers, developers, product experts, lovers, fighters and, most of all, geeks. And we’re at our best when bringing digital products to life that really matter. For more than 20 years, our team has worked with clients in multiple industries to create game-changing web and mobile apps that transform businesses by making them more ... read Remote reviews & insights
$150 - $199/hr10 - 491999Shrewsbury, United KingdomWe are a team of dedicated web and mobile developers and designers working with clients globally to develop outstanding web and mobile apps. To achieve success in every project, we have a clearly defined process, project management system, and team structure. We assign a project manager (single point-of-contact), UI/UX designer, front-end developer and back-end developer ... read Hiredeveloper.co.uk reviews & insights
$25 - $49/hr10 - 49United KingdomBuilding software for global leaders. At Exeonic, we're dedicated to harnessing the power of AI and custom software development to drive business transformation. With over seven years of experience, we specialise in delivering innovative and tailored solutions that leverage the latest technologies to streamline operations, boost efficiency, and foster growth. ... read Exeonic reviews & insights
$25 - $49/hr10 - 492023London, United KingdomZithas Technologies was founded by two guys in 2018, and they wanted to help businesses perform efficiently in order to grow, therefore not settling for anything less than excellence in their service and delivery to clients. Were Edward Ball (Director) & Julius Gohil (Technical Director) Zithas Technologies is an information and technology services company with ... read Zithas Technologies reviews & insights
$50 - $99/hr10 - 492018Bristol, United KingdomUsing AI Tools
Claude
OpenAI API
Cognivise is a UK software development company. We build custom software, web applications, websites and online stores, and when a company needs more engineering capacity than it has, we put together the team to do the work.You work directly with experienced people who understand your goals and build your solution. That keeps communication simple, decisions ... read Cognivise reviews & insights
$50 - $99/hr2 - 92025London, United KingdomWhy Cognivise?
- Senior people only, nobody learning on your budget
- You own the code and the documentation
- We build it, then support it after launch
Altum Software partners with Fintech startups, guiding them from pre-seed to product-market fit and beyond. We build regulatory-compliant Web3 applications, secure high-load Fintech products, and integrate AI-powered data analytics. We’re a team of 25+ software architects, engineers, product managers, business analysts, product designers, and QA engineers. We are committed to implementing cutting-edge, human-centered Fintech solutions ... read Altum Software reviews & insights
NA10 - 492019London, United KingdomWelcome to Spectrum Networks Solutions Ltd, where innovation meets expertise. We are a bespoke software development company dedicated to turning your ideas into tailored digital solutions. Whether you’re a startup looking to bring your vision to life or an enterprise aiming to optimize processes, we craft software that aligns with your goals and scales with ... read Spectrum Networks Solutions reviews & insights
$25 - $49/hr2 - 92000Milton Keynes, United KingdomAt HGL Tech Solutions, we believe in the power of simple, effective, and accessible technology. As a growing startup established in 2020, we've quickly earned the trust of clients by delivering solutions that meet their unique business needs. With a focus on AI, cloud technologies, and custom software development, we are redefining how businesses harness ... read HGL Tech reviews & insights
$25 - $49/hr2 - 92020Leeds, United KingdomUsing AI Tools
ChatGPT
Perplexity
Simplified Solutions & Co Ltd is a London-based payments, security and software consultancy established in 2010. We help UK organisations achieve PCI DSS and ISO 27001 compliance, test their defences with manual-led penetration testing, and build secure payment and software platforms. Our work spans PCI DSS and PCI SSF compliance, open banking, ISO 27001 certification ... read Simplified Solutions reviews & insights
NA50 - 2492010London, United KingdomWhy Simplified Solutions?
- Expertise Team
- Tailored Services
- All in one
NerdPeople, your catalyst for digital evolution, operates at the convergence of business and technology. We're trailblazers in strategy, design, and emerging tech, propelling companies towards their digital destiny, unlocking their boundless potential, and securing a competitive edge. Our pledge is simple yet profound: we deliver nothing less than exceptional software, punctual and cost-effective. At NerdPeople, ... read NerdPeople reviews & insights
NA50 - 2492008London, United KingdomMetryus - is a software development company, which creates wonderfully made digital financial solutions. One of the areas of our expertise is high-performance, reliable mobile-, and web-banking applications. Our mission is to enhance the financial services experience by providing professional and modern FinTech products to the market. Metryus unites professionals from multiple backgrounds with one ... read Metryus reviews & insights
$25 - $49/hr10 - 492017London, United KingdomWe are a Software development company .We believe that a strong development base and an attractively designed grooming can equip a website with huge power - the power to speak for the brand.We deliver software's /Websites on time and continuously . We take care of your maintenance. We will make sure projects wont go over ... read Binsera Ltd reviews & insights
$50 - $99/hr2 - 92019Poole, United KingdomMindpath Technology caters proven strategies with IT services & solutions to its clients to deliver high-quality solutions. Since inception, we are committed to excellence and designing exemplary solutions for real challenges. The tech experts with thousands of man hours of experience have already crafted deployed and reinstated the global projects. We focus on IT consulting, ... read MindPath Technology Limited reviews & insights
$25 - $49/hr10 - 492014London, United KingdomKernelics is a boutique web and mobile software development firm for startups and tech companies. Provided Services: - Staff Augmentation - Web App Development - MVP Development - Mobile App Development - Project Management - UI/UX Design - Quality Assurance We Work With: - Startups - Tech Entrepreneurs - Enterprises - E-commerce Business - Small ... read Kernelics reviews & insights
$25 - $49/hr050 - 249London, United Kingdom
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