All Web App Development Companies in Greater London
TRIARE
4.9(11 reviews)TRIARE unlocks IT potential of YOUR business
TRIARE is a WEB and MOBILE software development company based in Europe. We are delighted to offer our services as your long-term partner, taking all technical matters off your shoulders and allowing you to focus on your business development. YOU WILL GET: ✔ In-house team . Work with a dedicated team that is 100% focused on your product and located in the same office. ✔ Efficiency & transparency , as our process is based on Scrum methodology and managed by certified Scrum Masters. ✔ Fast result. Working with us, you will get the first result in 1 week. ✔ High quality, as TRIARE has well-established processes of software development and experienced specialists. ✔ Full cycle development . Our company covers all stages of development, handling everything from Discovery and prototyping to Design, development, and maintenance. ✔ IP rights . From the very beginning, you are the only owner of the intellectual property of your project materials: source code, design, documentation, etc. ✔ Warranty period will be provided for your system for free. ASPECTS OF OUR MINDSET: - Focused on results. We are focused on the result of your business with an understanding of the real goals and KPIs that our team should achieve. - Solution Provider. It means that we always come to you with solutions, not with questions. We take all technical aspects of the project off your shoulders, allowing you to focus on the marketing and business strategies. - We go the extra mile. Being a proactive company, we always think and take a step ahead. TECHNOLOGIES WE USE: - Mobile app development: Kotlin, Java, Swift, Objective-C. - Cross-platform development: Flutter, React Native. - Web frameworks: Node.JS, React.JS, PHP, Ruby on Rails.19 works in Web ApplicationLocated in Greater London, United Kingdom (+3)From €10,000 for Web ApplicationWorked in Hospitals & Healthcare (+20)Speaks English, Ukrainian51-200 membersDuck.design
4.7(29 reviews)You need design done. Just get it!
RecommendedTop awardedYour brand designs are too important to be left in the hands of unreliable freelancers or expensive creative agencies. Why not hire an experienced, full-time designer who knows you by name and your brand by heart? Since its creation, Duck.design has been able to capitalize on a number of areas that currently constitute its strength: - Logo, Brand Guide, Style Guide; - Graphic Design; - Web Design; - UI/UX Prototyping; - 3D Design; - Game design; - Explainer Video, 2D Animation, GIF.Looking for work in Web ApplicationLocated in Greater London, United KingdomBudget on requestWorked in Banking & Financials (+8)Speaks English51-200 membersAGCS Works
4.8(36 reviews)Marketing - Design - Social Media - Video Production
RecommendedTop awardedWe are an award-winning international digital agency. Our key areas of focus are: - Marketing and Marketing Strategy - Social Media - Design and Digital Design - Video Production and Editing - Web Development - Branding and visual identity - Digital design - HTML5 coding and Banners We have worked with clients including Yamaha, Universal Pictures, Ubisoft, Qatar Airways, and Samsonite, as well as top creative agencies across the UK, Europe and United States. Our team of designers, video editors and web development specialists helps brands and creative agencies execute flawless design and digital production projects.10 works in Web ApplicationLocated in London, United Kingdom (+1)From €1,000 for Web ApplicationWorked in Accounting (+16)Speaks English11-50 membersInstinctools
5(10 reviews)Your AI-powered Engineering Partner
Top awardedMeet *instinctools - a global AI-powered software engineering company with over 25 years of experience. We help both SMBs and Enterprises build robust, scalable software solutions that excel in functionality and design. Our core services include: Agentic AI enablement Custom software development enhanced by deep AI expertise Digital product engineering Business process automation Legacy system modernization Advanced data analytics and visualization Cloud infrastructure and DevSecOps Headquartered in the USA (Maryland) and Europe (Germany), *instinctools offers convenient locations for meeting and collaborating directly with our clients. We have development centers in Poland, LATAM, India, and Kazakhstan that combine global expertise with a strong price-quality balance to ensure exceptional results across time zones. Our work is backed by ISO-certified quality standards, strategic partnerships with leading tech platform, and a long-standing commitment to engineering excellence. Instinctools holds a broad portfolio of regional and industry-specific certifications, including CIR, HIPAA, and other compliance frameworks required for regulated markets. The 2025 Annual Customer Satisfaction Index is 9.1 out of 10.3 works in Web ApplicationLocated in London, United Kingdom (+4)From €10,000 for Web ApplicationWorked in Construction (+10)Speaks English, German(+1)201-500 membersU1CORE
4.9(18 reviews)PARTNER IN CRIME FOR STRONG BUSINESSES. Websites · Branding · Software
Highly recommendedTop awardedWebsites · Branding · Software Website: https://www.u1core.com/ Book a call: https://calendly.com/hello-u1core/30min Most companies outgrow their digital before they notice. The business is strong, the team is good, the product works. But the website is still the first version, operations still live in spreadsheets, and the brand says nothing a competitor couldn't say. That's where we come in. WHAT WE DO · Websites — marketing sites, landing pages and platforms that sell before your team has to · Branding — identity and design systems that position you at the level you actually operate at · Software — web and mobile products, internal tools and operational systems that replace manual work WHY ONE TEAM Brand agencies do brand. Product studios do product. Outsourcing firms write code. The real problems sit between those disciplines — which is why we do all of it, under one contract, with one person accountable for the result. WHO WE WORK WITH Companies with real revenue and a team in place: founders and owners scaling past their first system, operators rebuilding for growth, and businesses entering a new market. WHERE WE'VE PROVEN IT $720M+ processed through a platform we built. Classified marketplaces with millions of listings. Trading exchanges and auction systems running in production. SaaS, fintech and marketplace products across 40+ projects. HOW WE START With a diagnostic, not a proposal. We look at your website, brand and operations, show where you lose trust, traffic and time — and what to fix first. LET'S TALK IF your business is strong but your website, brand or operations don't play at the same level yet.1 work in Web ApplicationLocated in London, United KingdomFrom €10,000 for Web ApplicationWorked in Banking & Financials (+18)Speaks English11-50 membersGRM Digital
5(5 reviews)Digital marketing and technology that drives measurable growth.
Top awardedGRM Digital is an award-winning digital agency helping ambitious businesses generate sustainable growth through SEO, paid media, content, digital strategy and technology. Since 2009, we've worked with organisations to improve their digital visibility, attract the right audiences and turn digital activity into measurable commercial results. Our marketing capabilities include SEO, PPC and paid search, content strategy and creation, digital PR and authority building, analytics, conversion optimisation and wider digital marketing strategy. We don't treat these channels in isolation. Our teams combine marketing expertise with UX, data, design and technology to understand the complete customer journey, from how prospects discover your business through to how they engage, convert and become customers. For organisations looking for an ongoing digital marketing partner, we develop integrated strategies based around clear commercial objectives. This includes understanding your market and competitors, identifying growth opportunities, building the right channel strategy and continuously measuring and improving performance. Unlike agencies focused purely on marketing activation, GRM also has extensive technical expertise across websites, CMS, eCommerce and digital platforms. This allows us to identify and solve the technical, UX and performance issues that can limit marketing results. Whether you need to increase organic visibility, improve paid search performance, create better content, generate more qualified enquiries or build a long-term digital growth strategy, GRM provides the strategy, expertise and ongoing optimisation needed to deliver measurable growth.3 works in Web ApplicationLocated in Greater London, United Kingdom (+4)From €20,000 for Web ApplicationWorked in Education (+6)Speaks English, Croatian(+2)11-50 membersSWC Partnership - part of the global UP Group
4.9(17 reviews)The local agency with a global reach.
Top awarded🇬🇧 Welcome to SWC Partnership. We develop marketing strategies and campaigns to accelerate your sales and brand awareness . SWC is a full service marketing agency that works as an extension of your team . We deliver brand strategy , integrated marketing plans , creative concepts , creative production , transcreation, media planning/buying and campaign reporting . Our services are designed to be integrated into your existing infrastructure, either as a full service partner or for a specific discipline. Our expert teams are highly experienced in working across both B2B and B2C industries; whilst delivering international , national and local marketing solutions. We’re passionate about making a commercial difference to our clients and provide measurable and accountable marketing that drives ROI . We are headquartered in the UK and operate across Europe, with a special focus on the DACH region. We are an agile team of specialists and part of UP, THERE EVERYWHERE , the first global cloud based agency . Headquartered in Stockholm, Sweden , with a further 15 bases including Hamburg , Helsinki , London , New York , Dubai , Shanghai , Switzerland , Amsterdam and Palma among others. We offer a global agency solution whilst connecting you with teams locally . Providing local insight and appreciation of country nuances, we can plan, produce and deliver your international marketing programmes in each of your targeted countries and territories, as if you would in your home market. Through multilingual marketing managers and transcreation experts , we ensure your international sales & marketing is a success . Visit our website to find out more and contact us to discuss your requirements. www.swcpartnership.com Specialist petcare marketing: petcare.swcpartnership.com Specialist tech/manufacturing marketing: tech.swcpartnership.comLooking for work in Web ApplicationLocated in Greater London, United Kingdom (+5)Budget on requestWorked in Technology Hardware & Equipment (+14)Speaks English, Chinese(+8)11-50 membersAscendro Technologies
4.8(15 reviews)Growing with Technology
Highly recommendedTop awardedAbout Ascendro Ascendro is a German-Romanian engineering company that builds and runs software-critical systems. Around 45 senior engineers, working from Timisoara and Germany. Most software vendors treat go-live as the finish line: the system is delivered and operating it becomes someone else's problem. We work the other way around. We take end-to-end responsibility for architecture, delivery and production operations - uptime, incidents, deployments, security - and stay accountable for how the platform behaves for years afterwards. This matters most when software becomes business-critical faster than the infrastructure around it matured. A pilot turns into a production service. The internal team knows the domain but was never sized to run a platform 24/7. That is where we are useful. We do not rebuild operations for every client. Our DevOps Foundation is a reusable, cloud-agnostic backbone for CI/CD, monitoring, logging, authentication and backups, already running across multiple live environments. It moves systems into stable production without a client having to hire a platform team - and we can operate it afterwards. Track record BMW DriveNow - the city-scale shared mobility platform; Ariston and Wolf - connected heating and manufacturing-critical environments; Thinksurance - a regulated, high-availability insurance distribution platform; Samsung - release management for large-scale software delivery; Several of these engagements have run for many years. We are certified to ISO 27001 and TISAX, staff senior squads rather than interchangeable headcount, keep 85-90% engineer retention, and give clients direct founder access instead of account managers.10 works in Web ApplicationLocated in London, United Kingdom (+2)From €5,000 for Web ApplicationWorked in Automotive (+18)Speaks English, French(+2)11-50 membersFellow Partners
5(8 reviews)Your partner for commercial success.
RecommendedTop awardedWelcome to Fellow Partners. We're an award-winning international brand and marketing agency helping businesses create commercial momentum through brand strategy, identity and integrated marketing campaigns. At Fellow, we believe great brands should do more than look good—they should drive growth. We combine strategic thinking with creative excellence to build brands, launch campaigns and deliver marketing that helps businesses win customers, increase sales and strengthen market position. Working as an extension of your team, we provide strategic and creative expertise across every stage of the customer journey, including: • Brand Strategy & Positioning • Brand Identity & Visual Design • Packaging Design • Brand Messaging • Copywriting • Marketing Strategy & Planning • Creative Campaign Development • Content Marketing & Creative Production • Account Based Marketing • Digital Marketing Campaigns & Websites • Media Planning & Buying • International Marketing & Transcreation • Campaign Reporting & Performance Analysis Whether you're launching a new brand, repositioning an existing one, or looking to generate more leads and sales, we create connected brand and marketing programmes that deliver real commercial impact. Our experienced team works across both B2B and B2C sectors, supporting clients throughout the UK , Europe , the US and wider international markets. By combining global strategic thinking with local market insight , we create brands and campaigns that resonate wherever your business operates. As an agile, senior-led agency, we integrate seamlessly with in-house teams or provide a complete outsourced brand and marketing solution. We focus on delivering work that is accountable, measurable and aligned to your commercial objectives. Visit our website and contact us to learn more about Fellow Partners and discover how we can help your business build a stronger brand and accelerate growth . www.fellow.partners2 works in Web ApplicationLocated in London, United KingdomFrom €3,000 for Web ApplicationWorked in Software & Computer Services (+11)Speaks English, German(+1)11-50 membersSigli
5(11 reviews)Software development, Web development, Data Solutions, AI, ML.
Highly recommendedSigli is a forward-thinking software development company specializing in digital product development and digital transformation. Our mission, ‘ Data Science with Purpose, Innovation with Impact ’, drives us to transform innovative ideas into practical solutions. Our services encompass the entire development lifecycle, from initial concept to implementation, ensuring every product we build is high-quality, scalable, and future-proof. Sigli assists businesses in navigating the complexities of digital transformation, modernizing their operations, enhancing customer experiences, and maintaining a competitive edge in the ever-evolving digital landscape. Our team's deep expertise, combined with a commitment to leveraging the latest technologies and best practices, ensures we deliver impactful results for our clients. Our dedication to excellence is further demonstrated by our ISO/IEC 27001 certification, the leading standard for Information Security Management Systems (ISMS). This certification underscores our commitment to maintaining the highest standards of information security, making us a trusted partner for businesses looking to thrive in the digital age.18 works in Web ApplicationLocated in London, United Kingdom (+2)From €10,000 for Web ApplicationWorked in Hospitals & Healthcare (+12)Speaks English, Dutch(+3)51-200 membersMagora
5(6 reviews)PRODUCT DEVELOPMENT TAILORED FOR YOUR BUSINESS
Magora is an AI, Web & Mobile product consultancy that offers digital services to businesses across a broad range of industries, including Healthcare, Education, Retail, eLearning and eCommerce. Whether a custom AI product, B2C or a B2B project, iOS or Android app, first of all, we take the time to understand your goals, your product and the end-user’s needs. Our software development cases are loved by users for their convenience and appreciated by customers for the real value they add to your business.10 works in Web ApplicationLocated in London, United KingdomFrom €10,000 for Web ApplicationWorked in Entertainment & Events (+9)Speaks English11-50 membersCab Engine | Digital Agency
4.9(5 reviews)We specialise in building high-performance teams to power your entire marketing engine.
RecommendedA trusted UK agency of 20 years, our unique partnership model has been the foundation for our client's success. Working with brands all over the world, our dedicated digital teams have driven significant results for our clients tech platforms and performance marketing.4 works in Web ApplicationLocated in Warwickshire, United KingdomFrom €30,000 for Web ApplicationWorked in Others (+8)Speaks English11-50 membersKeyToTech
(0 review)We help startups and companies develop and launch agile software products
Top awardedKeyToTech is a software development agency. We deliver AI, mobile, web, and backend services to companies worldwide.4 works in Web ApplicationLocated in London, United Kingdom (+1)From €5,000 for Web ApplicationWorked in Education (+12)Speaks English, German(+2)11-50 membersConTesta
5(20 reviews)Sell More. Live Better.
Highly recommendedTop awardedWe are a 360° marketing agency that provides comprehensive services so that, with a personalised approach, you can grow, evolve and take your business to the next level. We have clients in 8 countries and we speak English, Spanish, French and German. Our speciality is the personalisation of each campaign we execute, whether they are B2B, B2C, SMEs or large companies. We have an interdisciplinary team of experts in Social Media, Influencer Marketing, SEO, SEM, Web Design & Development and Planning . Our goal is to help you sell more so that you can live better. Contact us and we’ll get back to you within 24h.5 works in Web ApplicationLocated in London, United Kingdom (+4)From €1,000 for Web ApplicationWorked in Technology Hardware & Equipment (+21)Speaks English, French(+3)11-50 membersTHINGS
5(6 reviews)Product and Innovation Design
THINGS IS a product & innovation design agency for disrupting global B2C/ B2B markets. We design compelling experiences for hybrid (IoT) or pure digital products & services (including any kind of functional touchpoints: physical devices, web apps/sites, mobile apps, environmental...) and communication touchpoints (websites, interactive showcases, video tutorials, packaging, brochures...). We create easy, immediate & natural (voice, gesture, haptic) interactions to increase inclusivity and bring real value to every stakeholder and user.11 works in Web ApplicationLocated in Greater London, United Kingdom (+1)From €25,000 for Web ApplicationWorked in Home Services (+10)Speaks English, Italian11-50 membersRounded Labs
5(1 review)Building mobile apps since before the iPhone
Founded in 2007, Rounded Labs has been at the forefront of mobile software for nearly two decades. We developed the UK’s first mobile banking app and went on to build some of the earliest m-commerce apps on the UK App Store for brands including GAME, Gamestation, Waterstones, HMV and Next. Since then, we’ve designed and developed software across virtually every major industry: From retail, fintech and SaaS to logistics, enterprise platforms and public-sector projects, including work for the Bavarian Government. Today, we bring that same depth of experience to ambitious businesses looking to build, modernise or rescue complex digital products. Nearly 20 years of experience. Some of the UK’s earliest mobile apps. Still building what comes next.4 works in Web ApplicationLocated in Birmingham, United KingdomFrom €10,000 for Web ApplicationWorked in Banking & Financials (+6)Speaks English11-50 membersPS
4.9(12 reviews)The last word in digital
Top awardedAt Propaganda Solutions, we believe marketing should be accessible, effective, and built for real business growth—not just empty metrics. That’s why we’ve redefined digital marketing with a science-backed, psychology-driven approach that puts you in control. We specialize in SEO, paid media, social, web development, and performance analytics, crafting strategies that don’t just generate clicks, but drive real influence and long-term customer trust. Our unique AI-powered tools and deep expertise in human behavior and decision-making mean we don’t just market—we engineer outcomes. If you want marketing that’s built on clarity, control, and measurable success, you’re in the right place. Let’s transform your business together. 🔹 Data-led. Influence-driven. Results-proven. 🚀 Let’s talk. German Version8 works in Web ApplicationLocated in Greater London, United Kingdom (+1)From €1,000 for Web ApplicationWorked in Food (+12)Speaks English, German(+3)11-50 membersCreative Navy
5(22 reviews)Only senior designers. Evidence-based approach.
Top awardedCreative Navy is a UX/UI design studio that tackles complex, high-stakes projects for professional and industrial applications. Using an evidence-based approach, they create intuitive, resilient interfaces for sectors like healthcare, manufacturing, automotive, and energy. They are specialists in embedded GUIs and touch interfaces for mission-critical systems—from surgical and diagnostic devices to automotive HMIs and marine control panels in extreme environments. Their work balances design finesse with operational realities such as latency, constrained screen space, and use under stress, backed by rigorous testing for clarity, cognitive load, and performance in edge cases. Beyond embedded systems, they design technical tools for engineers, clinicians, and analysts: B2B platforms, native desktop apps for research, and real-time data visualization. Their process integrates deep domain understanding, regulatory awareness, and the logic of expert decision-making. With teams in London, Berlin, and Basel, Creative Navy blends global insight with Germanic precision and Swiss reliability. Clients like Miele, Bosch, and Ford value their mix of design excellence, engineering alignment, and strategic thinking. Customers: ✅ Automotive: Jaguar, Hyundai, General Motors, Mazda, Ford ✅ Medtech: B Braun, Medtronic, Zethon, UnitedHealth Group, Humana, Johnson & Johnson, HCA Healthcare, Merck, Siemens Healthineers, Gilead ✅ Saas: Hubspot, Adobe, Zendesk, eToro ✅ Technology: BAE Systems, Siemens, Infineon Technologies, Miele, Philips, Bosch ✅ AI: Perplexity, Arlq, Owkin ✅ Finance: JPMorgan Chase, Bank of America, Goldman Sachs, American Express, Barclays ✅ Public bodies: UNICEF, OECD, Government of Canada, GOV.UK (GDS), Bundesagentur für Arbeit ✅ Other: Amazon, Walmart, ExxonMobile, Hilton, Comcast, PepsiCo, Delta, Linde, Shell, Deutsche Telekom, DHL, E.ON, Discovery Channel31 works in Web ApplicationLocated in London, United Kingdom (+7)From €3,000 for Web ApplicationWorked in Energy & Oil (+27)Speaks English, Danish(+9)11-50 membersDelante SEO/SEM Agency
4.9(115 reviews)Delante: SEO, SEM & AI Search in one Search Agency - focused on results, growth, and business impact
Highly recommendedTop awardedDelante is an award-winning international Search Agency specializing in SEO, SEM, and AISO (AI Search Optimization). With offices in Kraków, New York, London, Italy, Spain, we support global brands across 29 global markets. Our +65 experts create tailored strategies focused on business impact - not vanity metrics . We know that marketing has to pay off. That’s why we track ROI, ROAS, and CAC to ensure our clients’ investments generate measurable growth. From increasing visibility to scaling international sales, our result-oriented and data-driven approach makes us the trusted partner behind the success of global e-commerce and B2B leaders. Our strategies have earned us recognition from Top International Awards, including: 🏆 European Agency Awards 2026 Winner (Integrated Search Agency of the Year, Best Use of AI in a Client Campaign) 🏆 Forbes Diamonds 2025 🏆 Deloitte Technology Fast 50 Europe 🏆 Financial Times FT1000 🏆 Google Premier Partner - Top 3% of Agencies Worldwide 🌍 🏆 Global Search Awards 2024 - SEO Agency of the Year 🏆 European Search Awards 2024 🏆 Global Agency Awards 2024 - Best B2B SEO Agency of the Year 🏆 Global Digital Excellence Awards 2024 More visits, more sales - let’s get you in the lead! Forward is our only direction - because Delante means Forward. It’s our can-do-attitiude mindset.Looking for work in Web ApplicationLocated in Greater London, United Kingdom (+3)From €1,000 for Web ApplicationWorked in Clothing & Accessories (+8)Speaks English, Polish51-200 membersTechGropse Pvt. Ltd.
4.9(108 reviews)Next-Gen Apps for Next-Gen User
Highly recommendedTechGropse is a leading mobile app development company headquartered in Dubai with a prominent global presence in the UAE, USA & India. Established in 2015, we transform innovative ideas into reality, becoming a go-to name for businesses seeking stunning, high-performance mobile applications. Vision and Mission We help businesses grow by developing stunning mobile apps that users love. Our mission is to deliver high-quality, personalized solutions that meet the unique needs of every global client as a dedicated partner in your success. What We Do & Strategic Services TechGropse offers end-to-end services to meet all your digital transformation needs: Custom Mobile App & Software Development Expert UI/UX Design & Prototyping Cross-Platform & Native App Development Maintenance and Support AI Chatbot Development Machine Learning & AI Implementation (Agentic AI) Advanced Cloud Computing & DevOps Innovative IoT Development Industry Expertise We excel in developing apps for: Healthcare, FinTech, Logistics, Construction, Retail, Ecommerce, Energy, Insurance, Travel, Electric Vehicles (EV), and Real Estate. Why Partner With Us Using a stack like React, Node.js, Python, and Flutter, our client-focused team is committed to quality, timely delivery, and affordable pricing. We build long-term relationships through collaboration. Connect With Our Global Offices: USA Office: +1 267 327 4760 Dubai HQ: +971 527 984 766 Email: [email protected] Visit: https://www.techgropse.com/contact3 works in Web ApplicationLocated in Greater London, United Kingdom (+2)From €3,000 for Web ApplicationWorked in Clothing & Accessories (+13)Speaks English, Arabic(+2)51-200 members