10 Best UX/UI Design Agencies in London 2025

Clutch surveyed 600+ users to understand which UI and UX features matter the most to them. And to no one’s surprise, most of the top answers were design-related. 

But here are the two that you should care about the most:

• 94% of users said that user navigation is the most important feature for them.
• 83% of users agreed that they prefer a beautiful-looking website when browsing or shopping online.

A UX designer can help you create seamless user navigation, while a UI designer can create a stunning website/app that’s not just on-brand but makes conversions as easy as selling hotcakes.

However, doing this on your own can be a little overwhelming if you don’t know the latest UI/UX design practices.

That’s why we’ve rounded up the 10 best UI/UX design agencies in London for 2025. 

Whether you’re launching your first app or revamping a website, these UX agencies can help. They’ll help you create a responsive design that boosts your user engagement.

Understanding the Functions of a UI/UX Design Agency

A UI/UX design company does more than make your website and apps look good. They shape digital products into tools that users love. These UX agencies focus on two things: how a product (website/app) works (UX) and how it looks (UI). 

The result? Digital experiences that are both stunning and simple to use.

So, what does a UX/UI agency actually do? Let’s break it down.

Dig Into User Research

Have you ever wondered why some apps feel like they “get” you? It’s no accident. 

A UI/UX design company dives deep into user research. They study what your users want (preferences), what frustrates them (pain points), and what keeps them coming back. 

Understanding the factors leading to user satisfaction can make visual communication more effective.

Sketch Ideas (Wireframes) and Test Concepts (Prototypes)

Before the big build, UX agencies create wireframes and prototypes. 

Wireframes help you visualize the layout and functionality of your product before you start developing it. Once wireframes are finalized, the agency creates a prototype to test concepts and gather user feedback. This helps you create a user-centered design.   

Think of wireframes as blueprints for your website or app, while a prototype is like test-driving a car before buying.

Make It Pretty (and On-Brand)

Colors, fonts, icons — a UI/UX design agency handles all the visual aspects of a product.

But they don’t just aim for “pretty.” The designs must match your brand’s vibe. For example, a sleek fitness app with neon colors versus a calming yoga app with soft pastels. This is very important to create a cohesive visual experience.

Test. Test. Test.

What if a button is hard to find? Or a form feels clunky? 

UI/UX design services are experienced in catching these issues through usability testing. It’s all about making sure the product feels effortless.

For example, Jared M. Spool published a detailed case study of his experience working with a $25 billion eCommerce retailer, where simply changing a button led to an additional $300 million in sales.

Design for Every Screen

Now that Google has started mobile-first indexing, your website/app must work seamlessly on all devices – phones, tablets, and desktops. Otherwise, Google will punish your website/app.

That’s why the importance of UX design has grown over the years. As more users access the internet via mobile phones, a mobile-first design has become a cornerstone of good graphic design. Agencies tweak your designs so they look and feel great, no matter the device.

Team Up with Developers

A great design is useless if it’s not built well. After finalizing designs, agencies often collaborate with developers to ensure the designs are implemented accurately. They double-check everything. No detail gets left behind.

This is one of the most critical stages in the UI/UX design process. A UX agency may also assist developers in troubleshooting any issues that come up during development.

Keep Improving

Launch day isn’t the finish line. Agencies collect user feedback, fix problems, and make updates. This helps tweak the product to meet changing user needs and technological advancements.

Think of it as ongoing maintenance—like keeping your car running smoothly.

Work Hand-in-Hand with Clients

Collaboration is key. Agencies and clients stay in sync from start to finish. They talk, plan, and adjust so the product meets both user needs and business goals.

A good UI/UX design agency makes your product stand out. They combine creativity with strategy and create digital products that don’t just work but feel right.

Read Also: Best Website Design Agencies in London for Conversion-focused and Attractive Websites

List of the Top UI/UX Design Agencies in London

A specialized design agency can make sure your product doesn’t just look good—it works perfectly, too.

Hiring a user experience agency in London also has perks:

• Access to top talent. London’s graphic design scene is thriving.
• Easier collaboration. Nothing beats face-to-face meetings.
• Local market insights. They know what works here.

So, let’s jump in and have a look at the UX/UI design agencies in London.

1. Duck.Design

Yes, that’s us! We may sound a little biased here, but we have a proven track record to back it up. 

At Duck.Design, we believe great design is about more than just looking good—it’s about creating experiences that work. We’re not just another graphic design studio in London. We take pride in going deeper. 

Every project we take on is personal. Our global team of 100+ designers has worked closely with 400+ high-growth and enterprise companies, including big brands like Amazon, Virgin Media, and Logitech.

Our mobile app UI/UX design services are one of the most sought-after services in London – and we deliver it flawlessly. For us, design isn’t just what we do; it’s how we help brands connect with their audiences in meaningful ways.

As a leading UI/UX design agency in London, we have been awarded “Best UX/UI Agencies for SME and Enterprise” by Influencer Marketing Hub, “Top 1 Graphic Design Companies 2024” by Clutch, and “Best Web Design Agencies” by Sortlist.

✅ Why Choose Us?

• We follow a flat-fee pricing structure. So, you can make unlimited design requests and revisions at no extra cost!
• Expect quick turnarounds. Our skilled designers deliver your designs within 24 to 48 hours.
• Streamlined process. We provide you with a one centralized platform for communication and a dedicated design team to make sure your project runs smoothly.

2. Make it Clear

Make it Clear is a well-known UX/UI agency that has worked with big brands like Virgin Media, Google, Orange, IQVIA, Thales, Licel, Biofidelity, and more. They are a team of 15+ specialists in the fields of research and strategy, UX design, and branding.

Within their design services package, they offer services like information architecture, wireframing and prototyping, UI design, style guides, design systems, A/B testing, and conversion rate optimization (CRO).

✅ Why Choose Them?

• Make it Clear’s projects have won industry awards like the London Design Award, CMA International Content Marketing, and an FMBE Award.
• They have an average rating of 5.0 on Clutch, which is impressive!
• Along with design services, they also provide UX audit services to analyze your existing website/app and pinpoint the areas of improvement.

3. Pixelfield

Pixelfield is a leading UX agency in London specializing in UX, UI, and product design. Along with London, they are also present in Prague and Amsterdam.

Pixelfield has a team of 20+ specialists for strategy, design & development. If you are looking for a design studio with a small team that you can work closely with, consider checking out Pixelfield.

✅ Why Choose Them?

• 10+ years of experience in the field of UI and UX makes them one of the most experienced agencies in the UK.
• They help you create an interactive prototype that helps you validate your idea and plot the customer journey.
• Their designers work closely with their in-house talented developers to implement your designs quickly and effectively. 

4. Nomensa

Nomensa is a well-known UX/UI agency. They specialize in user flow design, digital strategy, and accessibility, helping you create impactful digital experiences for your users.

Their approach combines research, design, and technology to deliver solutions that meet user needs while aligning with business objectives.

✅ Why Choose Them?

• Experience across a variety of sectors – Charity, Government, Finance, Education, Health, Retail, Tourism, and more.
• A team of 140+ specialists specializing in experience delivery, technology and development, content management, UX design, and UX research.
• They have registered procurement frameworks – G-Cloud 14, Digital Outcomes and Specialists 6 (DOS 6), Digital Inclusion and Support.

5. The UX Agency

The UX Agency, located in London, is a global UX research and design firm. They use UX design and strategy to solve real problems, driving innovation and growth.

Emphasizing collaborative, evidence-based design, the agency creates products that exceed customer expectations. They have partnered with clients like TikTok, offering insights to shape strategies in the UK eCommerce market.

✅ Why Choose Them?

• The UX Agency follows ethnographic research to understand your users’ behavior and create user-centric designs.
• They are a team of 20+ designers who are design leaders and passionate about research.
• They have 16+ years of experience working with clients from different sectors, including finance, public services, technology, and healthcare.

6. Lilo

Lilo is a premier UX design agency in London that delivers personalized digital solutions to small businesses and even big corporations. Using proven strategies, this UI/UX design company for startups can capture user attention and drive engagement for new businesses. They specialize in enhancing the user experience of your website/app by improving interface design.

They approach your project by integrating comprehensive product and service design, CRM interface design, and front-end development to create a cohesive digital journey for your users.   

✅ Why Choose Them?

• Lilo’s clients highlight their design’s intuitive navigation, fast loading speeds, and frictionless interaction.
• Lilo has a strong portfolio of successful projects across various industries; this shows their ability to adapt their design strategies to meet different client needs.

7. Plug & Play

Plug & Play, founded in 2006, is a UX agency in London and Surrey specializing in web and mobile app redesigns and digital marketing to enhance lead generation, lower acquisition costs, and boost customer value.

Their designers, developers, and marketers work closely with clients to ensure effective creative and technical strategies. With expertise in B2B software, CRM/ERP interfaces, fintech, healthcare, and eCommerce, they serve small to mid-size businesses and some enterprises.

✅ Why Choose Them?

• Awarded “Top User Experience Company United Kingdom 2024” by Clutch.
• They have in-house design and development teams who work together closely to design and implement your vision without any errors or bugs. 

8. Lighthouse

Since 2008, Lighthouse has been one of London’s finest UI/UX design services. They are a team of highly talented digital designers and strategists who excel in UX/UI design, illustrations, and branding.

The Lighthouse team always focuses on usability and accessibility. They offer two main services: 

• Product Makeover: You get a team of professional UI/UX designers to take a look at your existing products and offer fresh ideas.
• Idea to Launch: Offers a full-service UX package, including product discovery, validation, product design, and product launch.

✅ Why Choose Them?

• Their industry experience of 15+ years gives them a strategic edge in delivering the best UX research reports.
• Combines research, planning, prototyping, testing, and UX design expertise to create the best website or app for your users.
• They have their tried and tested UX processes to give you the best framework for your design project.

9. Cyber-Duck

Founded in 2005, Cyber-Duck is a leading digital agency for global brands like the Bank of England and Mitsubishi Electric. They focus on user-centered design, data-driven marketing, and technology, utilizing ISO-accredited processes and agile management.

Cyber-Duck’s team has presented at major events like SXSWi and UX London and featured on BBC Watchdog. They are part of Deloitte’s Technology Fast 500 (EMEA), with accolades including the Webby and UXUK Awards.

✅ Why Choose Them?

• Their award-winning UX Design process is ISO-certified (ISO 9241-210 for Human-Centred Design).
• They do comprehensive UX research to discover your users’ pain points and create engaging user experiences.
• Their two decades of experience in providing UX design services to top companies in the UK gives them a strategic edge over other agencies.

10. Hiyield

Hiyield is a popular UX design agency in London known for its professional attitude, innovative solutions, and creative designs. They specialize in user experience designs, user interface designs, branding, and graphic design.

They follow a 5-step UI/UX design process to keep things simple – consultation and discovery, research and strategy, design and development, review and refinement, and launch and support.

✅ Why Choose Them?

• They follow the latest trends and UI design principles to ensure your designs are better than your competitors.
• Many of Hiyield’s clients highlight the premium quality of their work and transparent communication.
• Blends technical SEO, on-page SEO, and off-page SEO within the UX design process so you get the highest visibility in search engines.

How We Evaluated User Experience Agencies in London

When evaluating user experience (UX) agencies in London, we considered several key factors to compile this list of agencies that align with your project needs and business goals. 

Here’s a comprehensive list of factors that we used for our evaluation:

• Expertise and Specialization

We assessed the agency’s expertise in UX design and whether they have experience in a variety of industries or a specific industry. 

One thing to remember here is that specialized knowledge in a particular industry can lead to more effective design solutions tailored to your target audience.

• Portfolio and Case Studies

We reviewed their portfolio for a diverse range of projects. We looked for detailed case studies that showcase their design process, problem-solving abilities, and the impact of their work on previous clients.

• Client Testimonials and Reviews

We closely monitored customer feedback across multiple platforms, like the agency’s website, social media, and third-party review sites such as Sortlist and Clutch.

This helped us gain insights into their reliability, work ethic, and overall client satisfaction.

• Design Process and Methodologies

We asked the agency about their design process, focusing on how they do user research, usability testing, and iterative design. A systematic approach guarantees comprehensive attention to your users’ needs and preferences.

• Collaboration and Communication

We evaluated how the agency approached collaboration with clients. Effective communication is essential for aligning project goals and ensuring your vision is realized throughout the design process.

• Team Dynamics and Skills

A talented team with varied skills can boost creativity and innovation in design solutions. We recommend you explore the qualifications and experience of the team members handling your project.

• Flexibility and Adaptability

We analyzed the reviews and communicated with the past clients of these agencies to understand how adaptable the agency was to changes in project scope or direction. An agency that can pivot based on feedback or new requirements will be more valuable throughout the project lifecycle.

• Pricing Structure

Most of the agencies on the list have a “custom pricing” model, except for Duck.Design, which follows a flat-fee structure that starts at $1899/mo. So, choose the one that aligns with your budget.

While curating this list, we tried to include the agencies that offer affordable packages but premium-quality services.

• Location and Accessibility

Not everyone prefers collaborating with a fully remote agency, as in-person meetings foster personal connections and allow for detailed discussions about your project.

This is why we selected agencies with offices in London or its vicinity. Opting for a local London agency can simplify communication, enhance collaboration, and provide opportunities for face-to-face meetings when needed.

Duck.Design’s Exceptional UI/UX Design Solutions to Drive Engagement and Growth

Struggling to create a digital product that users love? Duck.Design can help.  

We focus on one thing: making your product intuitive and beautiful. 

Think of us as your co-pilot. You bring the big ideas. We shape them into seamless, user-friendly experiences that take your website conversion to the next level.  

 Our UI/UX design services include:

• User research: We dig deep to understand your audience. What they love. What frustrates them. What do they expect. 
• Wireframing and prototyping: Early drafts and test runs. No surprises later.  
• Visual design: Clean, modern, and on-brand. Every time.  
• Usability testing: Real feedback from real users.  

It’s like crafting a perfect recipe. We tweak and test until it’s just right.  

Why work with us?

• Fast delivery. Our team works like clockwork. Need it within 48 hours? Done.  
• Flat-fee pricing. Our plans start at $1899/mo. No cap on design requests and revisions. No hidden costs at all. 
• Collaborative process. You’re in the loop every step of the way.  

Our experienced team of UI/UX designers will help you create a product that’s easy to use. A design that makes people pause and say, Wow!

Ready to make it happen? Book a free call with us. 

Duck.Design is here to take your vision to the next level.