User research
Interviews, usage data, session recordings and task analysis with real users, turned into decisions rather than a report.
UI/UX Design · London (Dagenham)
UI/UX Design Company in London
Research, product design, prototyping and design systems for London software products and internal tools, tested with real users and carried through to working software by the same team.
Most product decisions are made by the loudest person in the room. Research replaces that with evidence: what users are trying to do, where they fail, what they say and what they actually do. In a London startup or a corporate product team, a week of interviews and usage data changes what gets built, and it is far cheaper than building the wrong thing well.
Infynix Solutions designs software products and internal tools for London companies: research, flows, wireframes, prototypes tested with real users, visual design, a design system and a handoff engineers can build from without guessing. Because we build software too, design carries through to working code when the client wants one team.
We work with SaaS and fintech startups, healthcare and professional services firms, and companies whose staff spend hours a day in internal tools that were built but never designed.
How we work
- 01
Discover
A paid discovery phase producing a scoped roadmap you own outright.
- 02
Architect
Data model, integrations and infrastructure agreed before code.
- 03
Build
Fortnightly demos, working software, no black box.
- 04
Hand over
Your repositories, your infrastructure, documented.
UI/UX design services in London
Product definition and flows
The structure of the product decided before visual design, reviewed with the people who will use it.
Wireframes and prototypes
Clickable prototypes tested with users on the devices they own before a line of code is written.
Visual design and design systems
Components, tokens and patterns documented so the product stays consistent as it grows, and becomes a code library.
Accessibility
WCAG-aligned design, which regulated and public sector buyers increasingly require of the products they license.
Developer handoff and design in the sprint
Specifications, assets and a component library, with the designer staying involved as the build reveals what the design missed.
What a design engagement produces
Research you can act on
Findings turned into a prioritised list of what to change and why.
Tested prototypes
Flows validated with real users before engineering begins.
A design system
Components and tokens documented, and built as code where we build the product.
Accessible by default
Contrast, keyboard navigation, screen reader support and focus states handled.
Measurement plan
The events and funnels that will tell you whether the design worked.
Developer-ready handoff
Specifications and assets engineers can build from without guessing.
Typical engagements and timelines
| Engagement | Timeline |
|---|---|
| UX audit of an existing product | 1 to 2 weeks |
| Research and product definition | 2 to 4 weeks |
| App or web product design | 4 to 10 weeks |
| Design system | 3 to 6 weeks |
| Embedded product designer | Monthly |
Who we design for in London
SaaS and startups
Products that need a designed experience before the next round or the next enterprise pitch.
Fintech and payments
Flows where trust, speed and FCA disclosure requirements have to coexist on one screen.
Healthcare
Patient and clinician interfaces where clarity and error prevention matter.
Professional services
Client portals and internal tools for firms where the interface is the service.
Internal business tools
Operations, CRM and back-office screens staff use for hours a day.
How we engage
Fixed-scope design project
Research, design and handoff for a defined product or release.
Embedded designer
A designer working inside your product team month to month.
Design and build
Design carried through to engineering by the same team.
Research before opinions
Research does not need to be slow or expensive. A week of structured interviews, a look at the analytics and session recordings, and a task analysis of what users are actually trying to do produces more useful direction than a month of internal debate. The output is a prioritised list of what to change, not a deck.
We run research with real users of the product or its predecessor, on the devices they own, and we bring the findings into the design as decisions.
User interviews
Structured conversations with the people who use or will use the product.
Usage data
Analytics and session recordings where the product exists.
Task analysis
What users are trying to do, step by step, and where it breaks.
Decisions, not decks
Findings turned into a prioritised backlog.
Design for internal tools that people use all day
The most neglected interfaces in any London business are the ones staff use for hours a day: the case management screen, the booking system, the operations dashboard. They were built but never designed, and the cost shows up as errors, training time and workarounds. Designing them properly is often the highest-return design work a business can buy, because the users are captive and the volume is enormous.
We design internal tools with the same rigour as consumer products: observing the work, mapping the tasks, reducing steps, preventing errors, and testing with the people who will live in them.
Task observation
Watching the work as it is done, not as it is described.
Fewer steps
Removing clicks, fields and screens from the tasks done most.
Error prevention
Designing so mistakes are hard to make and easy to undo.
Tested with staff
Prototypes tried by the people who will use them.
From design to working software
Design that stops at a Figma file is half a product. The handoff has to give engineers specifications, assets and a component library they can build from, and the designer has to stay involved as the build reveals what the design missed. Because Infynix builds software as well as designing it, design and engineering are one team when the client wants them to be, and the design system becomes a code library rather than a document.
After launch, the measurement plan tells us whether the design worked, and the next iteration is planned from real usage.
Specifications and assets
Everything engineers need, organised.
Component library
A design system that becomes code.
Design in the sprint
The designer stays involved through the build.
Measured after launch
Events and funnels that show whether the design worked.
Designing for fintech and regulated products
London is Europe's fintech capital, and a payments, lending or investment product has to do three things on one screen that pull against each other: earn trust, move fast and disclose what the FCA requires. Design that hides the disclosure fails compliance. Design that leads with it kills conversion. The work is in the sequencing, the language and the moment at which each piece of information appears.
We design regulated flows with the rules in scope from the first wireframe, test them with real users for comprehension as well as completion, and document the reasoning so compliance can sign it off without a rewrite.
Rules in the wireframe
FCA, CQC or other requirements mapped to screens before visual design.
Comprehension testing
Users tested on whether they understood, not just whether they completed.
Sequenced disclosure
The right information at the right moment, not all at once.
Documented reasoning
So compliance can approve the design rather than reopen it.
Product design for London from East London
Infynix Solutions works from Dagenham and designs products for companies across London, with research and testing sessions on site or remote as the users dictate. Design, engineering and marketing are one team, so a product designed here can be built and launched by the same people.
The discovery call is free. Bring the product, the analytics and the complaint you hear most, and we will tell you where we would start.
Frequently Asked Questions
How much does UI/UX design cost in London?
Scope drives the number, so the honest answer comes after a short discovery rather than before it. What we commit to in advance is that the quote is fixed for the agreed scope, that there are no surprise extras, and that we tell you when a cheaper route would serve you better.
Do you test designs with real users?
Yes. Prototypes are tested with real users of the product or its predecessor, on the devices they own, before engineering begins, and the findings change the design.
Do you build what you design?
Yes, where the client wants one team. Infynix builds web and mobile software, so design carries through to engineering without a handoff gap and the design system becomes a code library.
Can you design to WCAG accessibility standards?
Yes. Accessible design is the default, and we can design and test to a stated WCAG conformance level where a client, a regulator or a public sector buyer requires it.
What is a UX audit?
A one to two week review of an existing product against usage data, heuristics and user tasks, producing a prioritised list of what to fix and why. It is the fastest way to find out where a product is losing users.
Do you design internal tools, not just consumer products?
Yes, and it is often the highest-return design work a business can buy. Operations, CRM and case management screens used all day are designed from task observation, with fewer steps and error prevention, and tested with the staff who use them.
Can a designer join our product team?
Yes. An embedded designer works inside your team month to month, in your tools and your sprints, with capacity scoped to the roadmap.
Do you work with fintech and regulated products?
Yes. Flows where trust, speed and disclosure requirements have to coexist are a common brief, and we design with the FCA, CQC or other applicable rules in scope from the start.
How long does a product design engagement take?
A UX audit takes one to two weeks. Research and product definition takes two to four. Full product design runs four to ten weeks depending on scope, and an embedded designer works month to month.
Do you work in Figma with our team?
Yes. We work in your Figma workspace where you have one, with a component library and design tokens that your engineers and future designers can inherit.
Do you run design sprints?
Yes, where the problem suits one. A structured week from problem framing to a tested prototype is a fast way to de-risk a feature or a new product direction before committing engineering time.
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Talk to Infynix About UI/UX Design in London
Tell us what you are trying to grow and we will tell you honestly whether we are the right people for it.
39 Becontree Avenue, Dagenham, Greater London RM8 2UH+44 7436 670553 · office@infynixsolutions.co.uk