UX design agency in London
User experience design for London companies: research, tested prototypes, UI and design systems your developers can build, accessible to WCAG 2.2 AA.
- Custom quote after a brief
- No sales pitch
Company-wide:★★★★★ 4.9+ on Clutch·250+ brands·10 offices
UnFoldMart is a UX and UI design agency with an office at 32 London Bridge St, London SE1 9SG. We do UX research and audits, user flows, wireframes, tested prototypes, UI design and design systems for apps, SaaS products and internal tools, designed to WCAG 2.2 AA with the Equality Act and UK GDPR in mind. Meetings are by video in English; pricing is a custom quote after a short brief and a free 30-minute call.
Last updated:
Key facts
| Service | UI/UX and product design: UX research and audits, user flows, wireframes and tested prototypes, UI design, design systems in Figma, accessibility to WCAG 2.2 AA, developer handoff |
|---|---|
| Company | UnFoldMart |
| Office | 32 London Bridge St, SE1 9SG London, United Kingdom |
| Meetings | By video (in-person meetings only at our Frankfurt and Zürich offices) |
| Languages | First call and project calls by video, in English |
| Time zone | UK time (GMT/BST); project teams are led from our international offices |
| Typical timeline | Research and audit 1–3 weeks · structure and flows 1–2 weeks · prototype and testing 1–3 weeks · UI and design system 2–6 weeks (ranges, not guarantees) |
| Pricing | Custom quote after a short brief: fixed-scope project, ongoing design support or a UX audit first. No price list. |
| Booking | Free 30-minute video call ↗ |
| Company-wide | 10 offices in 10 markets · 250+ brands · 500+ projects · 4.9+ on Clutch · 8 working languages · Webflow Certified Partner |
User experience design for London companies
London is Europe's largest tech and finance hub, with fintech, retail, media and SaaS companies competing on digital products. Users here have high expectations, and accessibility is part of good service under UK law.
London at a glance
- IndustriesFintech, retail, media, property, health, SaaS
- Data lawUK GDPR and the Data Protection Act 2018
- PaymentsCards, Apple Pay, Google Pay, pay by bank
- LanguageEnglish
- Time zoneGMT in winter, BST in summer
Fintech and financial services
Onboarding, account and payment journeys that are clear, accessible and easy to trust.
Retail and e-commerce
Product discovery and checkout flows with fewer steps and fewer drop-offs.
SaaS and B2B software
Dashboards and admin tools that stay simple as features grow.
What our London UX and UI designers do
App design, web app UX, product design for SaaS, and the design system behind it.
UX research
Interviews, analytics, support tickets.
UX audit
Your product reviewed, issues ranked.
Flows and structure
Information architecture, key journeys.
Wireframes and prototypes
Clickable, tested before build.
UI design
Every screen and state.
Design systems
Figma components, in step with code.
UX audit, redesign or design system?
Three common ways to start. We recommend one after the first call, based on your product and goals.
| UX audit | Redesign | Design system | |
|---|---|---|---|
| You get | Ranked usability and accessibility issues | New flows, prototype and final UI | Figma components, tokens and usage rules |
| Best when | You need to know what to fix first | The product is hard to use or out of date | Several teams design and build in parallel |
| Research | Expert review plus your data | Interviews and usability tests | Audit of existing screens and code |
| Typical start | Fastest start | After research and scope | Alongside or after a redesign |
Products we design
Common product types; illustrative screens, not client work.
SaaS dashboards
Data people can act on.
Mobile apps
iOS and Android screens.
Booking and checkout
Fewer steps to done.
- Chat interfaces
- Review and approval
- Clear AI labels
- Feedback controls
How we work
Five steps, tested with users before anything is built.
- 1ResearchInterviews, analytics, audit
- 2FlowsStructure and wireframes
- 3Prototype and testWith real users
- 4UI and handoffDesign system, specs
Timeline
| Phase | Typical duration | You get |
|---|---|---|
| Research and audit | 1 to 3 weeks | Research findings and ranked UX issues |
| Structure and flows | 1 to 2 weeks | User flows and wireframes |
| Prototype and test | 1 to 3 weeks | Tested clickable prototype |
| UI and design system | 2 to 6 weeks, by screen count | Final UI, every screen and state, design system |
| Handoff and build support | During build, as agreed | Specs, tokens and design review during build |
Typical ranges in weeks, not a guarantee.
Designed to WCAG 2.2 AA
Our default target, specified in every design. Full conformance also depends on the build; we review it with your developers.
- Colour contrastSC 1.4.3
- Visible focusSC 2.4.7
- Target sizeSC 2.5.8
- Text alternativesSC 1.1.1
- Keyboard pathsSC 2.1.1
- WCAG 2.2 (W3C) ↗Source
How to choose a UX design agency in London
Six checks before you sign, whoever you hire.
Research before pixels
Ask how they find out where users get stuck: interviews, analytics, usability tests.
UnFoldMart: Research and audit come first, sized to your questions.
Accessibility built in
Ask which standard they design to and how they document it.
UnFoldMart: WCAG 2.2 AA by default, noted in every design.
A tested prototype
A clickable prototype tested with real users before development starts.
UnFoldMart: Prototype and test rounds before handoff.
A design system, not just screens
Reusable components and rules, so new screens stay consistent.
UnFoldMart: Figma components and tokens, in step with code.
Developer handoff
Specs your developers can build from, and a review of the build.
UnFoldMart: Specs, annotations and build review.
Ownership of the files
Who owns the Figma files, research and components at the end.
UnFoldMart: All design files are yours.
UX agency, freelance designer or in-house team?
| UX agency | Freelance designer | In-house team | |
|---|---|---|---|
| Skills | Research, UX, UI and design systems in one team | Usually one specialism | The roles you hire |
| Start | After scope and quote | Often quick | After hiring |
| Continuity | Team covers absences and handover | Depends on one person | High while the team stays |
| Your management effort | Low to medium | Medium to high | High |
| Cost model | Project quote or monthly support | Hourly or daily rate | Salaries, hiring and tools |
| Best for | A full product or redesign | A defined, smaller task | A long-term core product |
What affects the cost
No price list. Your quote depends on these factors.
- Journeys and screensHow many, how complex.
- Research depthInterviews, test rounds.
- PlatformsWeb, iOS, Android.
- Design systemNew, or extend yours.
- TimelineYour release date.
- Accessibility and research reachTesting with disabled users or several UK user groups adds research time.
Ways to work with us
Fixed-scope project
A new product or a redesign.
Ongoing design support
Monthly, alongside your developers.
UX audit first
Ranked issues you can use anywhere.
How quoting works
- Short briefYour product and users.
- Free 30-minute callBy video, in English.
- Written estimateScope, timeline, price.
- You decideNo obligation.
Recent UI/UX work
Two client websites where we designed the UI/UX.
Aytrus
Singapore · Luxury candles
Minimal, mobile-first UI and UX for a new luxury brand's Shopify store.
Re-Twin Energy
Germany · Energy
The entire UI/UX design for their website.
Your product next?
Show us your product or idea in a free 30-minute call; we suggest where to start and quote in writing.
Book a free call ↗Accessibility and privacy in the UK
This is general information, not legal advice. Your legal adviser has the final word.
Equality Act 2010
Service providers must not discriminate against disabled people and must make reasonable adjustments. This covers services delivered through websites and apps. We design to WCAG 2.2 AA so your product is usable with keyboards, screen readers and zoom.
Official source: Equality Act 2010 (legislation.gov.uk) ↗Public sector accessibility regulations
The Public Sector Bodies (Websites and Mobile Applications) Accessibility Regulations 2018 require public sector websites and apps to meet accessibility standards and publish an accessibility statement. We document accessibility decisions to support that statement.
Official source: Regulations 2018 (legislation.gov.uk) ↗PECR and cookie consent
The Privacy and Electronic Communications Regulations cover cookies and electronic marketing. We design consent banners and forms that are clear, with real choices, together with your privacy team.
Official source: PECR (legislation.gov.uk) ↗Public standards we design to
Working with us from London
One dedicated team; projects are led by UnFoldMart from our international offices.
Our London office
32 London Bridge St, SE1 9SG London
By video
Workshops, research sessions and design reviews by video.
Language
Calls and project work in English.
Time zone: UK time (GMT/BST)
Office-hours overlap: –
09:00–18:00 local time in both offices.
Company-wide figures across all our services, not only UI/UX projects.
- Zürich · in person
- Frankfurt · in person
- London
- Amsterdam
- Paris
- Madrid
- Warsaw
- Singapore
- Vancouver
- Gurugram
Frequently asked questions
UI/UX design in London: before you book a call.
Do you have a UI/UX design office in London?
Yes. Our London office is at 32 London Bridge St, SE1 9SG London. Workshops, research sessions, design reviews and weekly check-ins take place by video, in English. In-person meetings are available at our Frankfurt and Zürich offices.
How much does UI/UX design cost in London?
Pricing is custom. It depends on the number of journeys and screens, research depth, platforms, whether you need a new design system and your timeline. After a short brief and a free 30-minute call, you get a written estimate.
How long does a UI/UX design project take?
Typically: research and audit 1 to 3 weeks, structure and flows 1 to 2 weeks, prototype and testing 1 to 3 weeks, UI and design system 2 to 6 weeks depending on screen count. These are ranges, not guarantees.
What is the difference between UI and UX design?
UX design is how a product works: structure, flows and how easily people finish tasks. UI design is how it looks: layout, type, colour and components. We do both, starting with UX.
Will our design be accessible?
Yes. WCAG 2.2 level AA is our default target, specified in every design, which helps you meet rules such as the Equality Act 2010. Full conformance also depends on the build, so we review it with your developers.
Can you also build what you design?
Yes: our app development team can build it, or we hand over specs and design tokens to your developers and review the build with them. Projects are led by UnFoldMart from our international offices.
Do you design for fintech and other regulated products in London?
Yes. We design onboarding, account and payment journeys where clarity matters, and keep consent, error states and disclosures visible in the design. Your compliance team reviews the wording; we make it easy to read and act on.
Can you run user research with UK users?
Yes. We plan interviews and usability tests with the users you can reach, run them by video and share findings you can act on. Where you have analytics or support tickets, we start there.
Can you audit our existing app or website?
Yes. A UX audit reviews your product against usability and WCAG 2.2 AA criteria and ranks the issues by impact, so your team can fix the most important ones first.
Who works on our project, and how do we communicate?
A small dedicated team, led by UnFoldMart from our international offices. Calls are by video in English, with design reviews in Figma at each step.
Making your product easier to use in London?
Show us your product or your idea; we suggest where to start and quote in writing.