Top 11 UI/UX Design Agencies in London

London has a strong market for UI/UX agencies that help businesses improve digital products through research, interface design, prototyping and usability testing. Pixwelz LTD is the best UI/UX design agency in London for businesses that need digital product design and development services.

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This guide compares 11 UI/UX design agencies in London to help businesses assess their services, strengths and project fit. Each agency receives a concise overview to support a practical shortlist.

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Top 11 UI/UX design agencies in London are listed below:

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1. Pixwelz LTD

Pixwelz LTD is a UI/UX and digital product design agency that combines interface design, branding and development for websites, mobile apps and SaaS products. Its services cover user flows, wireframes, high-fidelity UI design, interactive prototyping and responsive interfaces.

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The agency works with startups, SaaS companies, eCommerce brands and service businesses. Its portfolio includes large-scale mobile and web application projects, including a 50+ page investment app and a property management SaaS product.

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Pixwelz also provides developer handoff, WordPress, Shopify and WooCommerce development, allowing businesses to combine design and implementation within one engagement. Its stated workflow covers discovery, strategy, design and delivery, with client feedback incorporated throughout the project.

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Best for: Startups and businesses that need UI/UX design alongside website, mobile app, SaaS or development support.

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Location: London, UK.

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2. Qubstudio

Qubstudio is a digital product design and branding agency that provides UX/UI design, product strategy, research, prototyping, testing and development services. Its work covers SaaS, fintech, healthcare, logistics, eCommerce and other digital products.

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Qubstudio’s services include UX/UI audits, market and user research, product vision and strategy, digital product design, branding and website design. Its portfolio includes projects for fintech, lending, infrastructure and software products.

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Best for: Digital product teams that need UX/UI design, product strategy and research across complex digital products.

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Location: Level 39, One Canada Square, Canary Wharf, London, UK.

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3. Make it Clear

Make it Clear is a London-based branding and design agency that provides UI/UX research, consulting and digital product design. Its services cover user research, customer journey mapping, information architecture, wireframing, prototyping, UI design, design systems and usability testing.

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The agency uses an evidence-led process that moves through definition, solution, implementation and optimisation. Its portfolio includes work for organisations such as the Design Museum, Cambridge University Press and Imperial College London.

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Make it Clear also supports UX audits, digital strategy, conversion rate optimisation and developer handoff, which makes it suitable for both new digital products and existing experiences that need improvement.

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Best for: Organisations that need research-led UI/UX design, digital strategy and ongoing product optimisation.

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Location: 42 York Street, Twickenham, London TW1 3LJ, UK.

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4. Pixelfield

Pixelfield is a London-based digital product and design agency that provides UX/UI design, product strategy and development for web and mobile products. Its design services include user research, discovery workshops, customer journeys, prototypes, UI kits, design systems and MVP design.

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The agency works with startups, scale-ups, agencies and established businesses across areas such as fintech, healthcare, education, eCommerce and logistics. Its portfolio includes mobile apps, web applications and digital products, with development capabilities that connect design with implementation.

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Pixelfield also supports teams after initial product design through testing, KPI-focused optimisation and continued product development. Its London office provides a local option for businesses that want design and development expertise within the same team.

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Best for: Startups, scale-ups and businesses that need UX/UI design combined with product strategy and development.

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Location: 25 City Rd, London EC1Y 1AA, UK.

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5. Browser London

Browser London is a UX-focused digital agency that combines user research, UX/UI design, front-end development and integrations. Its process covers user journey mapping, wireframing, rapid prototyping, user testing and high-fidelity interface design.

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The agency has experience with digital products, SaaS platforms, dashboards, mobile experiences and websites. Its work includes projects for organisations such as the British Library, Vantage Health and Bahrain International Circuit.

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Browser London also provides design systems and front-end development using technologies such as React, Next and Vue. This combination allows the agency to connect UX research and interface design with implementation and technical delivery.

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Best for: Businesses that need research-led UX/UI design with front-end development, particularly for complex digital products and dashboards.

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Location: 82 Great Eastern Street, Shoreditch, London EC2A 3JF, UK.

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6. Goodface

Goodface is a UX/UI design and development agency that works across websites, web apps, mobile apps and SaaS products. Its services include UX research, user flows, wireframes, prototyping, interface design and design systems.

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The agency has experience across fintech, EdTech, eSports, health and wellness and SaaS. Its portfolio includes products such as Magnetiq Bank, Corefy, PayAtlas and Neuromodus, covering UX/UI design alongside web or mobile development.

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Goodface also combines product strategy with design and development, which can suit businesses that want one partner across product discovery, design and implementation. Its current website lists a Bromley, United Kingdom office.

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Best for: Fintech, SaaS and digital product teams that need UX/UI design combined with development support.

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Location: Bromley, United Kingdom.

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7. Shoreditch Design

Shoreditch Design is a London-based UI/UX and digital product design agency that provides web and mobile app design, UX research, interaction design, prototyping and design systems. Its services also cover responsive design and ongoing design support.

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The agency works with startups, in-house teams and larger companies across sectors such as SaaS, fintech, healthcare, eCommerce and AI. Its portfolio includes work for Aegon, Aviva, Oxford Properties and Trading Leagues.

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Shoreditch Design follows a process that covers onboarding and strategy, design execution, client feedback and final delivery. Its UX approach also includes user journey mapping, wireframes, prototyping and testing before the team moves toward the final interface.

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Best for: Startups and established businesses that need UI/UX, digital product design and ongoing design support.

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Location: 35 Luke Street, Shoreditch, London, UK.

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8. Lighthouse

Lighthouse is a London-based UX/UI design agency that works with product teams on complex digital products. Its services include UX research, user flows, prototyping, UI design, design systems, user testing and product strategy.

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Lighthouse works across SaaS, finance, healthcare, workflow automation, automotive and travel. Its portfolio includes projects for PayPoint, Euromoney, Digital Theatre Plus, Automata and Kuoni.

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The agency also supports technical delivery through close collaboration with developers, design systems and developer-ready assets. Its approach suits product teams that need research, design and validation alongside an existing development function.

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Best for: Enterprise and product teams that need research-led UX/UI design for complex digital products.

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Location: 5–7 Tanner Street, London SE1 3LE, UK.

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9. Lumi

Lumi is a product studio that provides UX design, UI design, web design, development and growth services for startups. Its UX services include user research, customer journey mapping, information architecture, wireframing, prototyping, usability testing and UX audits.

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Lumi focuses on SaaS, mobile apps and AI products and reports work with more than 50 startups. Its portfolio includes fintech, e-commerce, SaaS and mobile products, with services that span product discovery, design systems, development and growth experiments.

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The studio also combines design and development, which suits startups that want one partner from product discovery through launch and ongoing improvement. Lumi operates as a fully remote team with locations listed in Edinburgh, UK, Palo Alto and Lisbon.

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Best for: Startups that need UX/UI design, product development and growth support within one engagement.

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Location: Edinburgh, UK; Palo Alto, US; Lisbon, Portugal.

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10. Spaceberry

Spaceberry is a UI/UX design studio that works with SaaS companies, startups and digital product teams. Its services include UX research, UX audits, mobile app design, web app design, SaaS design, e-commerce design and design-system creation.

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The studio has worked on more than 150 interfaces since 2016 and showcases projects across healthcare, fintech, media and SaaS. Its portfolio includes ELLE Uzbekistan and Ponteo, with case studies that cover digital platforms, mobile apps and web products.

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Spaceberry offers both subscription-based and fixed-price engagements. Its subscription model provides a dedicated design lead and project manager, while its service scope can cover product design, research and ongoing design work.

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Best for: SaaS companies, startups and product teams that need flexible ongoing UI/UX design support.

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Location: 124 City Road, London EC1V 2NX, UK.

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11. Lightflows

Lightflows is a digital agency with London and Surrey offices that combines UX/UI design with web development, web applications, mobile apps and discovery strategy. Its UX/UI work covers user research, user journeys, wireframes, prototypes, interface design and usability testing.

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The agency works with startups, SMEs and larger organisations across sectors including finance, healthcare, education, technology and retail. Its portfolio includes SaaS websites, web apps, mobile apps and digital platforms.

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Lightflows also provides front-end, back-end and full-stack development, allowing clients to connect UX/UI design with implementation. Its website states that the team has more than 15 years of experience and has delivered over 200 products.

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Best for: Businesses that need UX/UI design combined with web, mobile or digital product development.

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Location: London and Guildford, Surrey, UK.

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What should you remember when choosing the best UI/UX design agency?

The best UI/UX design agency matches your product goals, user needs, technical requirements and budget with the right design expertise. A strong choice depends on more than visual quality; the agency also needs a proven process, relevant experience and clear communication.

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The key factors to remember when choosing a UI/UX design agency are listed below.

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Relevant experience: Relevant experience shows whether the agency has worked on products similar to yours in complexity, industry or platform.

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Portfolio quality: Portfolio quality reveals how the agency approaches research, UX decisions, interface design and measurable outcomes.

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Service coverage: Service coverage confirms whether the agency can support research, user flows, wireframes, prototypes, UI design, testing and developer handoff.

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Design process: Design process shows how the agency moves from discovery and research to validation and final delivery.

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Technical capability: Technical capability helps connect design decisions with development requirements, accessibility and platform constraints.

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Communication: Communication establishes how teams share feedback, review progress and resolve decisions.

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Project fit: Project fit confirms that the agency's team structure, availability and working model suit your requirements.

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Cost and scope: Cost and scope clarify deliverables, revisions, timelines and payment terms before work begins.

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Post-launch support: Post-launch support provides continued design QA, testing and improvements when the project requires ongoing assistance.

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How do you evaluate a UI/UX design agency's portfolio?

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Evaluate a UI/UX design agency’s portfolio by reviewing relevant projects, case studies, research depth and measurable outcomes. Look for clear problem-solving, strong website design, consistent interfaces and evidence that design decisions improved the user experience.

What services should a professional UI/UX design agency offer?

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A professional UI/UX design agency offers UX research, user flows, wireframes, prototyping, mobile app design, interface design, usability testing, design systems and developer handoff. The service mix should cover the project from discovery through implementation support.

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How do you choose the right UI/UX design agency for your project?

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Choose the right UI/UX design agency based on its expertise, portfolio, process, communication style and pricing. Review relevant experience, service scope, technical capabilities, timeline and post-launch support before you make a decision.

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What questions should you ask before hiring a UI/UX design agency?

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Ask about the agency’s relevant experience, design process, project team, deliverables, timeline, pricing, communication, revisions, ownership rights and post-launch support. Also confirm how the agency handles research, testing, developer handoff and project changes.