Top User Testing Companies in City of Westminster

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Ergonomy (UX/UI)User Testing England Greater London City of Westminster

27 companies

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All User Testing Experts in City of Westminster

Cab Engine | Digital Agency
4.9
(5 reviews)
We specialise in building high-performance teams to power your entire marketing engine.
Recommended
A 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.
Looking for work in User Testing
Located in Warwickshire, United Kingdom
From €10,000 for User Testing
Worked in Others (+8)
Speaks English
11-50 members
GRM Digital
5
(5 reviews)
Reach your digital potential
Top awarded
We’re GRM Digital, an award-winning, full-service web development and digital marketing agency based in Leeds, London, Sarajevo, Amsterdam and Islamabad. Since 2009, we've been helping world-leading brands grow by providing high-quality, robust web development, SEO and digital consultancy, backed by in-depth research and analysis.
Looking for work in User Testing
Located in West Yorkshire, United Kingdom (+4)
From €1,000 for User Testing
Worked in Education (+6)
Speaks English, Croatian(+2)
11-50 members
U1CORE
5
(11 reviews)
U1CORE — A product studio for multi-sided platforms. Marketplaces, exchanges, auctions, fundraising
Recommended
Top awarded
YOUR PARTNER TO BUILD MULTI-SIDED PLATFORMS U1CORE is a product studio for the products where buyers, sellers, and operators meet, transact, and trust each other. Marketplaces, exchanges, auction systems, fundraising platforms, and operational CRMs with multi-role logic. 🔔 Book a Free Call: https://calendly.com/hello-u1core/30min or visit our website - https://www.u1core.com/ OUR SERVICES: Product Design — UI/UX, design systems, prototyping, user testing, platform-native patterns for marketplaces, auctions, exchanges, and donation flows Product Engineering — React, Next.js, Vue on the front; Node.js, Python, .NET on the back; mobile, payment integrations, multi-role architecture, admin tooling, DevOps Discovery & Platform Strategy — Cold-start strategy, trust and safety architecture, take-rate modeling, MVP scoping, UX audits, platform mechanics workshops Custom Development — Marketing sites and landing pages for platform companies, paired with the product engagement Why U1CORE: We pick a lane. Marketplaces, exchanges, auctions, donation platforms and almost nothing else. Founders come to us because we already know how their product breaks. One team, no relay race. Senior designers and engineers on the same project, kickoff to launch. The thing you ship is the thing we built nothing lost in handoff to a second studio. Built for the day it gets used. Multi-role flows, payments, admin tooling, infrastructure that holds up at peak load. We design for the brief and engineer for the day after. Receipts. $720M+ processed through one platform. Millions of listings on another. Our work has been recognised by CSS Design Awards (2× Site of the Day, 4× Best UX, 4× Best UI, 4× Best Innovation, 4× Special Kudos), Orpetron, TOP 10 Design Company in Dribbble! More than 300 clients have trusted us with their products. If your product has multiple types of users exchanging real value, and getting the platform right changes outcomes — let's talk.
Looking for work in User Testing
Located in London, United Kingdom
From €5,000 for User Testing
Worked in Hospitals & Healthcare (+13)
Speaks English
11-50 members
Creative Navy
5
(21 reviews)
Only senior designers. Evidence-based approach.
Top awarded
Creative 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 Channel
2 works in User Testing
Located in London, United Kingdom (+7)
From €1,000 for User Testing
Worked in Energy & Oil (+27)
Speaks English, Danish(+9)
11-50 members
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.
Looking for work in User Testing
Located in Cherkasy, Ukraine (+3)
From €5,000 for User Testing
Worked in Beverage (+20)
Speaks English, Ukrainian
51-200 members
Delante SEO/SEM Agency
4.9
(91 reviews)
Delante: SEO, SEM & AI Search in one Search Agency - focused on results, growth, and business impact
Highly recommended
Top awarded
Delante 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: 🏆 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 User Testing
Located in Kraków, Poland (+3)
From €1,000 for User Testing
Worked in Clothing & Accessories (+8)
Speaks English, Polish
51-200 members
Duck.design
4.7
(29 reviews)
You need design done. Just get it!
Highly recommended
Top awarded
Your 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 User Testing
Located in Greater London, United Kingdom
From €1,000 for User Testing
Worked in Banking & Financials (+8)
Speaks English
51-200 members
ConTesta
5
(20 reviews)
Sell More. Live Better.
Highly recommended
Top awarded
We 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.
Looking for work in User Testing
Located in Madrid, Spain (+4)
From €300 for User Testing
Worked in Technology Hardware & Equipment (+21)
Speaks English, French(+3)
11-50 members
PS
4.9
(12 reviews)
The last word in digital
Recommended
Top awarded
At 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 Version
Looking for work in User Testing
Located in Berlin, Germany (+1)
From €1,000 for User Testing
Worked in Food (+12)
Speaks English, German(+3)
11-50 members
Sigli
5
(12 reviews)
Software development, Web development, Data Solutions, AI, ML.
Highly recommended
Sigli 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.
Looking for work in User Testing
Located in Antwerp, Belgium (+2)
From €1,000 for User Testing
Worked in Software & Computer Services (+12)
Speaks English, Dutch(+3)
51-200 members
Pattrn Studios
5
(1 review)
We are an independent design studio making digital experiences that deliver lasting value.
Pattrn is an independent, award-winning customer experience and digital product design studio based in London. We support organisations and teams across the full product lifecycle - from CX strategy through to launch and beyond. Our work is grounded in research, driven by design and shaped by a deep understanding of user needs and business goals. We partner closely with our clients to create intuitive, scalable experiences that deliver measurable impact and to help them navigate digital transformation with confidence. We make things happen.
2 works in User Testing
Located in London, United Kingdom
From €5,000 for User Testing
Worked in Banking & Financials (+3)
Speaks English
11-50 members
ELEKS
5
(1 review)
Your trusted partner for guaranteed software delivery
Top awarded
ELEKS is your trusted partner for guaranteed software delivery. Combining over 30 years of industry insight with cutting-edge AI technology, we help businesses worldwide deliver their unique software vision through bespoke full-cycle solutions.
Looking for work in User Testing
Located in Berlin, Germany (+14)
From €20,000 for User Testing
Worked in Energy & Oil (+10)
Speaks English, German(+1)
1001-5000 members
Mattermore
5
(3 reviews)
We build brands that Mattermore.
Even in a logical B2B decision, we ask “what will this say about me?”, “how will I feel if I’ve got to defend it?” That feeling drives 70% of the decisions we make. That’s why we build brands that matter more than being the best on paper. Mattermore was founded on a different way to think behind creative. The driving forces in design are best practice and personal preference; the composite average and the sum total of perception. So when a brand is built on the sum total of average, can it really claim to be purposeful? When metrics are measured against industry convention, can we expect any answer but “spend more on marketing?” Our structure is simple. We built a studio to understand ‘why’ the action measured is happening, and inject that insight into everything a customer touches. Signal by signal, we build brands and experiences that create the human outcomes behind choice and loyalty, thoughtfully created, grounded in specific context. That approach allows us to define categories, change perceptions, understand identity and build things that really matter. The founder is the practice lead and primary contact for every client, ensuring every decision is grounded in an understanding of real commercial consequence. We partner with people who are open to being challenged, and measure success by what they create — not just what they extract. Every engagement leaves a footprint. We choose the ones worth making.
Looking for work in User Testing
Located in London, United Kingdom
From €1,000 for User Testing
Worked in Travel & Leisure (+2)
Speaks English
1-10 members
CAMELSOFT LLC
5
(3 reviews)
CAMELSOFT YOUR PARTNER IN YOUR DIGITAL TRANSFORMATION JOURNEY
Recommended
CAMELSOFT is a full-service company that specializes in IT solutions and digitization. We help entrepreneurs and businesses market their ideas and turn them into real brands. We work with a dedicated team of experts in the field who prioritize customer needs and ensure that we meet and exceed customer expectations. go to our complete profile. : https://www.behance.net/camelsoft visite our website: https://www.camel-soft.com
Looking for work in User Testing
Located in Sousse, Tunisia (+2)
From €1,000 for User Testing
Worked in Video games (+10)
Speaks English, Arabic(+1)
11-50 members
KeyToTech
(0 review)
We help startups and companies develop and launch agile software products
Top awarded
KeyToTech is a software development agency. We deliver AI, mobile, web, and backend services to companies worldwide.
Looking for work in User Testing
Located in London, United Kingdom (+1)
From €3,000 for User Testing
Worked in Travel & Leisure (+12)
Speaks English, German(+2)
11-50 members
Yalla Cooperative
5
(8 reviews)
We collaborate with purpose-driven organisations to create tech solutions that empower communities
Top awarded
Working together across the UK, Gaza, and the EU, we’re committed to designing and developing digital solutions that can drive positive, transformational change. We partner with non-profits, NGOs, and impact-driven businesses to create innovative solutions through technology that address societal challenges, spread knowledge, and transcend borders. If you are looking for a trusted digital partner to help amplify your impact, then get in touch. Why We Are the Partner You Need to Solve Your Problem Leverage the impact of digital with a partner you can trust You know the problems you want to solve, but it can be challenging to know how to use technology effectively. We collaborate with our partners in an open, transparent manner to identify and build digital solutions that amplify your impact and accelerate behavioral change. Create Innovative and Sustainable Solutions We are genuinely committed to tackling societal challenges with you. This means not just creating a product and moving on, but working with you over the long term—building, learning, and iterating with your community to provide lasting impact and amplify sustainability. Unlock Funding and Achieve More with Your Resources We assist our partners in finding and securing grants or investments. We create digital tools in a cost-efficient way, focusing on impact that can be tracked and demonstrated to secure the next round of funding. Our Focus Areas To achieve our mission, we have focused on a number of areas where we combine our digital expertise with partners to deliver digital solutions. Community Resilience and Wellbeing: We support organisations in simplifying complex social issues, providing digital tools for universal credit claims, personal independence payment benefits, cost of living assistance, and housing support. Our commitment lies in addressing these pressing challenges through digital innovation and user-centric design. Education and Empowerment: We believe education should be accessible to all. Our expertise spans e-learning platforms, digital literacy programmes, remote learning tools, and bespoke training resources, all designed to foster inclusive and accessible education for learners of all backgrounds. Healthcare Access and Equity: Our healthcare partnerships focus on creating groundbreaking solutions that bridge gaps in access and delivery. We develop telemedicine platforms, medical professional networks, research and evaluation systems, and other technologies that enhance patient care and streamline healthcare services for all. Advocacy and Civic Engagement: We collaborate with unions and grassroots movements to develop impactful campaigns, create digital platforms for advocacy, harness the power of crowdsourcing, and offer tools to enhance public engagement. By leveraging our expertise in public policy and digital communication, we empower organisations to drive meaningful societal change and influence policy decisions. Volunteer Mobilisation and Impact: We partner with charities and community groups to build effective volunteer engagement systems, making volunteering more accessible, meaningful, and scalable. Our work includes developing comprehensive volunteer management platforms, skills-based matching systems, and time-banking solutions that maximise the impact of volunteer programmes. Sustainable Agriculture and Environmental Stewardship: Our expertise extends to partnering with organisations focused on food security, climate action, and biodiversity conservation. We collaborate to create digital tools for sustainable farming practices, develop climate resilience strategies, and support initiatives aimed at reducing carbon footprints and promoting circular economy principles.
Looking for work in User Testing
Located in Greater London, United Kingdom
From €3,000 for User Testing
Worked in Education (+5)
Speaks English, Arabic(+2)
11-50 members
Agile Cyber Solutions Limited
4.9
(10 reviews)
Transforming Ideas into AI-Driven Web and Mobile Apps.
Highly recommended
Founded in 2012, Agile Cyber Solutions has been helping startups and small and medium enterprises (SMEs) grow with reliable custom software solutions. We specialise in developing AI-integrated products and services that empower SMEs to deliver innovative, modern solutions to their customers. With expertise in both open-source AI models (for privacy-focused solutions) and commercial AI models (for cutting-edge capabilities), we tailor our approach to meet your unique needs. From automating workflows to improving customer experiences, our tools drive efficiency, reduce costs, and enhance the value of your products and services. Get in touch to explore how our AI-powered solutions can transform your business. Our success is rooted in a clear and deliberate approach. We believe in collaboratively challenging solutions and technology choices to refine and align them perfectly. By deeply engaging with business use cases and implementation, we add value beyond coding, turning ideas into practical, impactful solutions. We pride ourselves on the honesty to say no to requests we cannot deliver. By staying super-focused on development and collaborating with experts for areas like UI/UX and SEO, we ensure that every aspect of your project receives the specialised attention it deserves. With a development team in India and a customer-facing team in the UK, we offer the best of both worlds: strong technical expertise and local understanding. Over the years, we’ve successfully delivered more than 350 projects for SMEs across diverse industries, earning a reputation for reliability and innovation. Still unsure? Work with us risk-free. We are so confident in the quality of our solutions that we offer a no-risk, money-back guarantee. If we don’t deliver as promised, we’ll refund your investment—no questions asked. Contact us today to learn more about our offerings and start your risk-free journey to discovering how we can help your business grow.
Looking for work in User Testing
Located in London, United Kingdom
From €5,000 for User Testing
Worked in Pets (+7)
Speaks English
51-200 members
Evangelist Apps
4.9
(6 reviews)
UK’s Leading AI, Software & Mobile App Agency
Recommended
Top awarded
At Evangelist Apps, we don’t just build apps, we craft intelligent mobile solutions tailored to business needs. With over two decades of experience, we guide our clients with best practices, smart architecture, and forward-thinking UX/UI. Our team has delivered high-performance apps for some of the world’s most trusted brands including British Airways, BBC, UBS, KLM Airlines, Virgin Money, Channel 4, Hastens, and BMJ. From concept to launch, we deliver quality, agility, and cost-efficiency every time. BTW, we are also an official Microsoft Cloud AI Partner! Whether you’re a startup or an enterprise, we help bring your ideas to life with pixel-perfect design, robust engineering, and unmatched reliability. Why Choose Us • 23+ years of mobile expertise • A seasoned, cross-functional app development team • Agile delivery with regular builds and updates • Cost-effective offshore development without quality compromise • End-to-end ownership from discovery to deployment Our Expertise • Native iOS and Android apps • Cross-platform apps using React Native & Flutter • Clean, user-focused UX/UI design • Scalable backend & API integrations • Dedicated teams for QA, DevOps, and Project Management
1 work in User Testing
Located in Hampshire, United Kingdom
From €2,000 for User Testing
Worked in Banking & Financials (+5)
Speaks English
51-200 members
Blott
5
(7 reviews)
The Design & Technology Firm for AI Era
Top awarded
As a global AI consultancy, we specialise in end-to-end transformation for complex, highly regulated industries; including banking, insurance, capital markets, and wealth & asset management. We partner with ambitious leaders to build AI-native products, intelligent interfaces, and agentic systems that act with clarity and purpose.
Looking for work in User Testing
Located in Greater London, United Kingdom
From €10,000 for User Testing
Worked in Banking & Financials (+3)
Speaks English
11-50 members
ioSTUDIOS
(0 review)
ioSTUDIOS are a UK based Software Development Agency, creating solutions for sector leading clients.
ioSTUDIOS are a UK based, leading Software Development Agency, creating bespoke software from conception, all the way through to delivery. For many years, we’ve helped transform companies from a variety of sectors and industries, by turning ideas and concepts into a plethora of business changing, bespoke software solutions. Ultimately, this means we are incredibly well versed and experienced in successfully completing software projects for a large variety of organisations.
Looking for work in User Testing
Located in West Midlands, United Kingdom
From €5,000 for User Testing
Worked in Travel & Leisure (+4)
Speaks English
11-50 members

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