A UI/UX design agency for teams building digital products.
We're a UI/UX design agency: we understand your users, structure the flows, and design interfaces with the typographic and visual care that separates a product from a prototype.
What's included
- User research, personas, and journey mapping
- Wireframing and information architecture
- High-fidelity visual design
- Interactive prototypes for testing and buy-in
What we don't do
- Front-end development
- Brand identity creation
- Full copywriting
- Photography and illustration commissions
How we work
Research
We talk to your users and review how the product is used today, so design decisions start from evidence.
Structure
We map user flows and information architecture, and sketch wireframes to settle layout before any visual design.
Interface design
We design high-fidelity screens with one consistent system of type, color, and components.
Prototype and test
We build interactive prototypes, test them with real users, and fix what the tests expose.
Handoff
We hand engineers annotated designs and a component library, then check the build against the design.
What it costs
Three ways to scope it, with a fixed price agreed before we start. Here is how each compares with what agencies typically quote.
Focused
One flow, one feature or a landing page.
- Mellon
- £5,500 – £13,500
- Typical agency
- £6,000 – £15,000
- Typical timeline
- 2–3 weeks
Request thisWhat you get Mellon Typical agency User flow and wireframes Included Included High-fidelity UI in Figma Included Included Clickable prototype Included Extra cost Developer-ready handoff Included Extra cost Revision rounds Two One 30 days of design support after handoff Included Not included Product
An MVP or app, around 15–25 screens.
- Mellon
- £13,500 – £36,000
- Typical agency
- £15,000 – £40,000
- Typical timeline
- 5–8 weeks
Request thisWhat you get Mellon Typical agency User research and interviews Included Extra cost Information architecture and flows Included Included Full UI kit and components Included Included Interactive prototype Included Included Usability test with five users Included Extra cost Design review of the built product Included Extra cost Weekly calls with the lead designer Included Fortnightly, via a project manager Platform
A multi-flow SaaS or multi-platform product, with a design system.
- Mellon
- £36,000 – £90,000
- Typical agency
- £40,000 – £100,000
- Typical timeline
- 3–5 months
Request thisWhat you get Mellon Typical agency Research and stakeholder workshops Included Included Design system, 100+ components Included Extra cost Web, tablet and mobile layouts Included Priced per platform Accessibility review (WCAG 2.2 AA) Included Extra cost Motion and interaction specs Included Not included Documentation and team training Included Extra cost 60 days of support after launch Included Not included
Prefer to pay by the hour or the month?
By the hour
Small jobs, fixes and work you cannot scope yet. Pay only for the hours used.
- Mellon
- £30 per hour
- Typical agency
- £75 – £150 per hour
- Senior designer, no juniors
- Billed in 30-minute steps
- Hours report every week
- Move to a fixed price if the scope settles
Monthly retainer
Best valueOngoing design work with hours reserved for you every month.
Quoted after a short call
- 40 hours reserved every month
- Weekly check-in call
- Priority turnaround on requests
- Unused hours roll over for one month
Prices are in GBP, before tax, and show the usual range for each scope. Agency figures are typical ranges from published 2026 pricing guides. Your quote depends on screens, pages and complexity.
Frequently asked questions
What's the difference between UI and UX design?
UX design decides how a product works: the flows, structure, and tasks. UI design decides how it looks and responds: layout, type, color, and components. We do both, so one team owns the result.
Do you do user research?
Yes. Research is part of the process, from user interviews to usability tests, and its depth is scoped to your project.
Can you redesign our existing product?
Yes. We review what's there, find where users struggle, and redesign those flows first, so you don't have to start over.
What do we get at the end?
Annotated high-fidelity designs, an interactive prototype, and a component library in Figma, ready for your engineers.
Can you work with our engineering team?
Yes. We hand off through shared files and a component library, and review the build against the design.
How do you price UI/UX design?
Clearly scoped work is a fixed project fee, and ongoing design is a monthly retainer. We scope it with you after a short call.