Top JavaScript Development Companies in UK
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Explore Reviewed JavaScript Development Companies in UK — Find Skilled JavaScript Developers for Your Project
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222 Companies
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UK
0.0 (0 Reviews)
0.0 (0 Reviews)
17
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
17
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Simplifying business through technology.
We collaborate with you to understand how technology may best serve your company, from mobile apps to SaaS systems (and everything in between). We do hear. We work together. We produce. Utilising innovative, user-centered approaches to solve complicated problems while adding a touch of flair. Yozu is a group of Liverpool-based consultants, developers, and designers. Through our decades of combined knowledge, we provide software development services to clients worldwide. Our expertise offers scalable, secure, and maintainable solutions for both businesses and organisations.
View Yozu Profile
$100-$149/hr
$25,000+
50 - 249
Liverpool, UK
0.0 (0 Reviews)
0.0 (0 Reviews)
17
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
17
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Software is a craft born out of practice
8th Light is a multinational team of software, design, and technology experts that was founded in 2006. We collaborate with innovative individuals and groups to assist them in conceiving and developing sophisticated, reliable, and ground-breaking software solutions for challenging issues. With extensive knowledge and experience in data, DevOps, software design, and development, we serve a diversified clientele seeking equally varied results. Our more than 140 team members live and work in places like London, New York, Los Angeles, and Austin, but we are employee-owned, with our headquarters located in Chicago, and we are rooted in a culture of constant learning and cooperation. Our goal is always the same, whether we're developing digital experiences that educate and uplift people, energizing and empowering businesses through technology-driven transformation, or supporting and mentoring internal teams seeking to increase their own technological know-how and software-building skills.
View 8th Light Profile
N/A
$250,000+
50 - 249
London, UK
0.0 (0 Reviews)
16
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
16
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Innovative Business Solutions
We at Cosonas create innovative solutions that are suited to your company's requirements. Our group is dedicated to using cutting-edge technology to improve growth, increase efficiency, and deliver a flawless experience.
View Cosonas Ltd Profile
$50-$99/hr
$5,000+
10 - 49
London, UK
0.0 (0 Reviews)
15
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
15
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
UK web design, SEO and ecommerce development for small businesses
Strony Internetowe UK builds fast, practical websites and ecommerce stores for small businesses across the UK. The service covers WordPress websites, landing pages, SEO structure, local search improvements, performance fixes and simple web tools that help companies turn search traffic into enquiries.
View Strony Internetowe UK Profile
$50-$99/hr
$1,000 - $10,000
2 - 9
Manchester, UK
0.0 (0 Reviews)
15
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
15
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Award-Winning Digital Marketing Agency in Manchester
First Internet, which was founded in the same year as Google, has spent 28 years successfully creating digital content. From our location in South Manchester, we collaborate with aspirational brands in the UK and beyond, fusing astute strategy, careful design, and strong development to produce websites, SEO campaigns, paid media, and social media content that yield quantifiable outcomes rather than just impressions.
View First Internet Profile
$100-$149/hr
$1,500 - $10,000
15 - 20
Manchester, UK
0.0 (0 Reviews)
13
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
13
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Code Beyond Limits
Stack360 is a leading software development agency helping UK businesses and global brands scale through expert software engineering services. Specializing in bespoke web development, high-performance mobile apps, and agile staff augmentation, we bridge the gap between complex ideas and digital reality. From London-scale startups to international enterprises, we deliver robust, secure, and scalable solutions tailored to your growth. Our elite developers ensure technical precision, modern UI/UX design, and seamless integration delivering engineering excellence that moves the needle.
View Stack360 Profile
N/A
$4,000 - $10,000
50 - 80
Barking, UK
0.0 (0 Reviews)
13
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
13
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Ai Driven Digital Marketing Agency in UK
Right Media UK, a results-driven digital marketing firm based in London, UK, was established in 2021 and is expanding internationally thanks to its Dubai branch and clientele. The agency's performance-first approach enables businesses to grow effectively through data-driven tactics, sophisticated analytics, and execution that is conversion-focused.
View Right Media UK Profile
$25-$49/hr
$1,000+
10 - 49
London, UK
0.0 (0 Reviews)
12
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
12
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
google ads agency birmingham
At Finsbury Media, we specialise in crafting data-driven Google Ads campaigns that focus on generating high-quality leads, not just clicks. Each strategy is tailored to increase visibility, attract the right audience, and deliver results that genuinely impact your business.
View Finsbury Media Profile
Undisclosed/hr
$1,000+
500 - 999
Coleshill, UK
0.0 (0 Reviews)
12
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
12
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
The AI-Powered Solution Development Company
Provanta is an AI-powered solution development company based in West Berkshire, helping SMEs across the UK build better business systems faster and more cost-effectively. We combine over 40 years of hands-on experience in complex business systems with AI-driven development through ORCA, our proprietary AI-led development engine. We specialise in bespoke solution development, legacy system modernisation, AI integration and agents, rapid solution prototyping, MCP server development, business solution consultancy, and ongoing maintenance and support. Our sector experience spans insurance, finance, ecommerce, healthcare and property. What sets us apart is our prototype-led approach. Rather than months of requirements gathering before you see anything, we deliver fully functioning prototypes in hours — letting you validate the direction, engage stakeholders, and reduce project risk from day one. The result: solutions delivered up to 90% sooner at up to 75% less cost than traditional development. We put human expertise first. AI generates the code, but experienced solution architects design the architecture, understand your business requirements, and ensure the solution genuinely fits how your organisation works. This combination of deep technical experience and modern AI tooling means you get the quality of a senior development team at a fraction of the usual cost and timeline. Our clients trust us with their critical systems — some partnerships spanning over 15 years. We are built on long-term relationships, honest advice, and doing the right thing for your business.
View Provanta Profile
$50-$99/hr
$1,000+
5 - 10
Newbury, UK
0.0 (0 Reviews)
0.0 (0 Reviews)
6
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
6
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
We build shops that help you sell more online
With over 15 years of eCommerce expertise, we help enterprises design, build, and scale high-performance digital commerce platforms. Our team has delivered complex, enterprise-grade solutions for leading UK brands across retail, luxury, and entertainment, using agile methodologies to ensure speed, flexibility, and measurable results. We prioritize transparency, collaboration, and business alignment—working closely with your team to define strategy, select the right technology, and execute solutions that support your long-term goals. Rather than a traditional vendor, we act as an extension of your organization. From initial concept to launch and beyond, we provide hands-on support to accelerate delivery and reduce risk. Our goal is to empower your team with the tools, knowledge, and confidence to manage and evolve your platform independently—ensuring sustainable growth and long-term success.
View Cabiri Profile
N/A
$1,000+
10 - 49
London, UK
0.0 (0 Reviews)
0.0 (0 Reviews)
5
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
5
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Thoughtful software development
Isotoma is a UK-based digital product agency specializing in web and mobile application development. With offices in York, London, and Manchester, our expert team transforms complex business challenges into intuitive, scalable digital solutions. We work seamlessly on both new projects and existing platforms, ensuring long-term product success. Leveraging AWS, TypeScript, Django, and React, we deliver secure, cost-efficient cloud deployments as certified AWS Consulting and Kubernetes Service Partners. With over 20 years of Python and JavaScript experience, we combine technical excellence with strategic design. Our services include: user research, UX/UI design, information architecture, Python/Django development, React/Node.js development, cloud deployment and cost optimization, and ongoing application support. We partner with clients to build reliable, high-performance applications that scale with their business.
View Isotoma Profile
$150-$199/hr
$25,000+
10 - 49
York, UK
0.0 (0 Reviews)
3
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
3
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Building SUCCESS online since 2000
Katalysis Net is a veteran UK web design and development agency with over two decades of digital expertise. Founded in 2000, they deliver strategically crafted, search-optimized websites that align with client business objectives. Trusted for their long-term client partnerships and commercial focus, Katalysis Net provides custom web solutions that improve online visibility, user experience, and measurable business outcomes.
View Katalysis Net Profile
$100-$149/hr
$5,000+
2 - 9
Saint Albans, UK
0.0 (0 Reviews)
3
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
3
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
YOU NEED IT, WE SOLVE IT
Infinity Technologies, based in London, is a leading provider of global R&D hub solutions designed to accelerate business growth. We create fully remote, lean teams that reduce overhead costs, eliminate unnecessary office, marketing, and sales expenses, and act as seamless extensions of your organization. Our proprietary fractal model ensures each R&D hub operates as an independent, self-contained ecosystem tailored to your product development, service maintenance, or strategic initiatives. With over 20 patented frameworks for team building, software engineering, and outsourcing strategy, we specialize in helping startups and mid-sized companies expand their global R&D footprint efficiently. Our library of reusable components accelerates prototyping, validates ideas faster, and shortens time-to-market while optimizing costs. Since 2003, Infinity Technologies has established 81 R&D hubs and currently manages 12 active hubs across 21 countries. By combining lean methodologies, scalable practices, and strategic innovation, we empower businesses to innovate, expand, and achieve measurable results in competitive global markets.
View Infinity Technologies Profile
$25-$49/hr
$100,000+
50 - 249
London, UK
0.0 (0 Reviews)
3
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
3
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Established 2003. Still delivering.
Tinderhouse is a mobile app development and digital product design company that helps startups, entrepreneurs, and established businesses transform innovative ideas into high-quality iOS and Android applications. Our team specializes in building scalable mobile solutions that combine strong functionality, modern design, and seamless user experience. With experience delivering both enterprise-level applications and startup-focused MVPs, we tailor our development approach to match each client’s goals, budget, and growth strategy. From early-stage concept validation to full product launch, Tinderhouse supports businesses throughout the entire digital product lifecycle. Our services include mobile app design and development, iPhone and iPad application development, Android app development, and web application development. In addition, we provide UI/UX design, branding, product strategy, and post-launch maintenance to ensure long-term performance and scalability. Using an iterative and agile development process, we break down complex technical challenges and transform them into reliable, user-friendly applications. This approach allows us to rapidly prototype, test, and refine features while keeping projects aligned with business objectives. By combining creative design, modern technologies, and strategic product thinking, Tinderhouse delivers powerful digital solutions that help companies launch faster, improve user engagement, and scale their mobile products successfully.
View Tinderhouse Profile
N/A
$10,000+
2 - 9
canterbury, UK
0.0 (0 Reviews)
3
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
3
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Production-Ready ML Systems & AI Automation
MLDataHouse is an elite data science, artificial intelligence, and intelligent automation firm based in Islamabad. Backed by five years of rigorous industry experience and a dedicated team of over 20 elite software engineers and data scientists, the firm specializes in engineering production-ready machine learning systems and automated enterprise workflows. MLDataHouse focuses heavily on solving complex business problems through custom web automation frameworks, autonomous AI agents, large-scale data extraction protocols, and advanced business intelligence analytics. Their engineered solutions help organizations replace manual operational overhead with high-throughput, accurate automated pipelines. By leveraging cutting-edge natural language processing and computer vision techniques, MLDataHouse delivers deep, actionable insights and cognitive automation. Whether building custom data lakes, orchestrating web scrapers that bypass anti-bot defenses, or constructing sophisticated predictive intelligence models, the company remains dedicated to driving measurable efficiency, data-driven decisions, and sustainable competitive advantages for its global clientele.
View Mldatahouse Profile
< $25/hr
$1,000+
50 - 249
Wolverhampton, UK
0.0 (0 Reviews)
2
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
2
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Your website never sleeps. It sells, connects, and converts around the clock
Forrentech is a full-service web and mobile app development agency delivering end-to-end digital solutions for businesses across industries including eCommerce, PropTech, HealthTech, FinTech, and SaaS. As a trusted technology partner, we help organizations streamline operations and accelerate growth with scalable, high-performance applications. Our services include custom software development, MVP development, and workflow automation, tailored to meet unique business needs. We also specialize in no-code development using platforms like Bubble, enabling rapid product launches, reduced development costs, and faster time-to-market. With a strong focus on innovation, client satisfaction, and long-term partnerships, Forrentech builds future-ready solutions that support digital transformation. From startups to enterprises, we empower businesses to scale efficiently while we manage their technology with precision and expertise.
View Forrentech Profile
$25-$49/hr
$1,000+
10 - 49
Birmingham, UK
0.0 (0 Reviews)
2
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
2
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
The Creative Performance Agency
Vouch is a performance marketing and creative agency focused on delivering measurable growth by connecting strategy, digital experiences, and results. We help brands acquire new customers and increase customer lifetime value through data-driven, ROI-focused marketing. Our expertise spans paid social, PPC, display advertising, SEO, digital PR, and email marketing—integrated with high-impact creative execution. By aligning campaigns with clear business objectives such as brand awareness, lead generation, and sales growth, we ensure every initiative drives tangible outcomes. At Vouch, our performance and creative teams collaborate closely, using continuous testing, optimization, and data insights to refine campaigns and maximize ROAS. We combine compelling creative with advanced targeting strategies to capture attention, drive engagement, and improve conversion rates. Through an agile, experiment-led approach, Vouch delivers scalable digital marketing solutions that help businesses stay competitive, optimize marketing spend, and achieve sustainable, long-term growth.
View Vouch Global Profile
$100-$149/hr
$5,000+
10 - 49
London, UK
0.0 (0 Reviews)
2
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
2
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Magento and Shopify eCommerce, Digital Marketing & Brand Consultancy.
Absolute Design is a Nottingham-based Magento and Shopify Plus agency helping ambitious eCommerce brands scale through data-driven strategy, UX design, and high-performance development. With over 30 years of experience, we partner with mid-market and enterprise businesses to deliver measurable growth and long-term platform success. Our integrated approach combines technical SEO, conversion-focused UX/UI, and robust development to build fast, scalable, and search-optimized online stores. From complex migrations and ERP integrations to custom Shopify Plus and Magento solutions, we ensure seamless performance and flexibility. We specialize in eCommerce SEO, site architecture, and ongoing optimization to boost visibility, traffic quality, and conversions. Through CRO, analytics, and continuous testing, we refine performance at every stage. With dedicated in-house experts, Absolute Design provides reliable support, strategic guidance, and scalable solutions that drive sustainable eCommerce growth.
View Absolute Design Profile
$100-$149/hr
$5,000+
10 - 49
Nottingham, UK
0.0 (0 Reviews)
2
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
2
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Full-service with AI search specialization
Embryo is an award-winning independent performance marketing agency on a mission to drive transformative brand growth through pioneering strategy, cutting-edge technology, and a team of dedicated specialists. The agency's holistic approach integrates Organic services—including SEO, content marketing, and digital PR—with Paid channels like PPC, affiliate marketing, and paid social, alongside Creative disciplines such as UX/UI design and conversion rate optimization. What sets Embryo apart is the fusion of deep intellectual curiosity, bold creative thinking, and proprietary Supertools that deliver measurable competitive advantage. The team approaches every business challenge from unexpected angles, uncovering growth opportunities others miss. Whether you're an emerging brand ready to disrupt your market or an established company looking to protect and grow market share, Embryo delivers extraordinary results with precision and ambition. Brands that choose Embryo choose excellence, innovation, and a true performance partnership committed to long-term success.
View Embryo Digital Profile
$100-$149/hr
$5,000+
50 - 249
Manchester, UK
0.0 (0 Reviews)
2
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
2
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Offshore AI & Software Development Teams
Offshorly Ltd is a highly trusted offshore software engineering company specializing in providing elite dedicated development teams, custom software development, and tailored AI business solutions. The company serves as a strategic technical scaling partner for organizations seeking to rapidly expand their digital capabilities without the prohibitive costs of local recruiting and internal infrastructure. Offshorly matches client projects with highly vetted, top-tier offshore technical talent, including full-stack developers, AI architects, DevOps engineers, and quality assurance specialists. Their service model emphasizes seamless cross-border integration, agile project management methodologies, and transparent communication protocols. By deploying flexible, dedicated development teams, Offshorly helps companies build robust web applications, integrate cognitive AI features, and update legacy applications. This approach enables modern enterprises and growing startups to remain flexible, maintain continuous development cycles, accelerate operational efficiency, and capture market opportunities efficiently and cost-effectively.
View Offshorly Ltd Profile
$25-$49/hr
$1,000+
50 - 249
Stamford, UK
0.0 (0 Reviews)
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Driving Innovative Growth
SEO Reforms is a results-oriented digital marketing agency delivering SEO, PPC, content marketing, social media, and web development since 2018. Trusted by 1,000+ satisfied clients globally, the agency drives sustainable organic traffic and qualified leads through transparent, data-driven strategies — making enterprise-grade digital marketing accessible to businesses of all sizes.
View SEO Reforms Profile
$50-$99/hr
$1,000+
10 - 49
London, UK
0.0 (0 Reviews)
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Etymology: Latin, literally, from the egg: from the beginning
Ab Ovo, Inc. is a Santa Clara, California-based IT consulting and staff augmentation firm founded in 2006, providing technology and operations solutions to Global 1000 companies. As a woman- and minority-owned business, Ab Ovo specializes in e-commerce platforms, cloud enablement, IoT, big data, business intelligence, automation testing, and enterprise application development and integration. The firm combines deep technical expertise with an understanding of client industries to solve complex business challenges with speed and agility. Ab Ovo's staff augmentation and software engineering services help organizations quickly scale technical teams while maintaining quality and adaptability to evolving business needs. With operations extending to the UK and India, the company supports clients across automotive, energy, eCommerce, financial services, manufacturing, medical, and retail sectors. Ab Ovo's productized applications and platforms are designed to accelerate digital transformation initiatives, making the company a reliable technology partner for enterprises seeking flexible, innovation-driven IT services and skilled technical talent.
View Ab Ovo, Inc. Profile
N/A
$1,000+
50 - 249
London, UK
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