There are approximately 200M+ active websites on the Internet. The design of your website is one of the ways through which you can stand out from the competition. If you want to have a distinct digital presence, then Rainstream is your leading UI/UX design agency that can turn your ideas into interfaces.
Success Stories that Make Us the Leading UI/UX Design Company in the UK
We build UX that drives frictionless user journeys, and we design UI that captures attention. The proof? The results that prove our expertise and experience. Here are the case studies that highlight how we take every project seriously and create designs that work in real life.

Beehive Illustration specializes in creating high-quality children's publishing artwork, collaborating with global illustrators for diverse projects.

UI UX Design Services
Beehive: Leading Agency for Illustration
Beehive Illustration is a leading international agency specializing in children's publishing, focusing on creating exceptional artwork for educational materials, picture books, ELT (English Language Teaching), and more. The agency collaborates...

Looking for UI/UX Design Services in the UK, Backed by Proven Results?
The world runs on websites and apps. UI/UX is not just a part of software development, but rather a foundation that defines how users experience and interact with your brand. Take all the best-performing apps, like Candy Crush, Facebook, and Instagram, and you’ll see one thing in common: intuitive design that keeps users engaged, coming back, and loyal.
You need a UI/UX design service provider that helps in helps turn your ideas into usable, scalable, and visually compelling digital products. Rainstream is the agency that you have been looking for:
- 9+ years of industry experience
- User research & behavioral analysis to understand your audience
- Accessibility-first design practices (WCAG compliance)
- UX audits and redesigns for underperforming platforms
- Responsive design for seamless cross-device experiences
How a UK UI/UX Design Agency Improves Digital Product Usability?
A UI/UX design agency doesn’t just bring aesthetics to your digital product. They bring in the expertise, experience, and what users want to the table. Users expect seamless, intuitive, and enjoyable experiences from every website and app they interact with. One friction point, one confusing interface, and they’re gone, possibly for good.
As a leading UI/UX design agency in the UK, we start the process by assessing the user’s needs, existing gaps, and business objectives. Our experts create user personas that are fictional yet research-based profiles that represent key segments of your target audience. We can capture the motivations, goals, pain points, behaviors, and context of real users to guide design decisions and ensure you're building products people actually want to use.
We conduct the scoping process that clearly defines the goals, features, constraints, and deliverables of a design project before any actual design work begins. Better usability isn’t just about how things look; it’s about how seamlessly they work for real people. This is how we build a foundation that makes users come back for more.

Key Deliverables from Professional UI/UX Designers in the UK
When you hire a UI/UX designer for your project, you can expect different deliverables during different phases of the UI/UX design process. From representation of user data to design ideas and reports, these deliverables provide a unified vision to stakeholders of where the project is heading. Let’s understand the different deliverables you may expect during the UI/UX design process:
UX Design
User needs and product objectives, personas, storyboards, customer journey maps, and competitive analysis that gives valuable insights on what’s going on in the market.
Feature and Content Requirements
Brainstorming design ideas in the form of a photograph or a document summarizing all the ideas. Content strategy and plan to come up with a solid plan for producing, edit, and archiving the content.
Information Architecture and Interactive Design
Sitemaps, taxonomies to categorize and label the data to improve usability, and user flow diagrams that mention how a task would be completed.
Interface Design
Wireframes, prototypes (low-fidelity and high-fidelity), UX writing, mockups that are images that define how the real product will look and work, and design systems, which are reusable components and guidelines.
Evaluation Deliverables
Usability testing, analytics data that includes website traffic, user interactions, and other metrics that help in identifying the trends, patterns, and areas of improvement.

Impact of UI/UX Design on Customer Engagement and Conversion in UK Markets
UI and UX design are the top priorities of application development. Greater retention and conversion rates are the results of an application that is designed with a thoughtful intent. It meets the user’s expectations and reduces the friction between the application and the user. For instance, a five-step checkout process can be converted into a one-page checkout by just reconsidering the UX and UI components.
Here is how UI/UX design becomes impactful in the UK market that expects high usability, accessibility, and no compromise on experience:
- Streamlined workflows mean improved user experience, which boosts the CSAT rates.
- Applications with performance optimization, like easy-to-use and less friction, have a 30% higher retention rate.
- High user retention directly translates to user loyalty, which leads to increased lifetime value and higher referrals.
- In terms of ROI, every $1 invested in UI/UX returns $100, hence, the ROI becomes 9,900%.
- Boosting the UX development budget by 10% can lead to an increase in the conversion rate by 83%.
How can UX design strategies be integrated with SEO best practices?
UX and SEO go hand-in-hand. Search engines, like Google, factor user behavior signals to rank websites on SERPs. So, this means that your website will be judged on the basis of bounce rate, time on site, and page load speed. These are all influenced by UX design principles. If SEO can bring the traffic, then UX ensures that the traffic stays there and takes the necessary action effortlessly.
UX design focuses on creating an intuitive, engaging, and frictionless experience for every visitor to your website. This, in turn, boosts the SEO because search engines prioritize websites that offer real value to users.
Here are the four tips that our UI/UX experts implement to support the SEO:
- We simplify site navigation by creating clear, consistent, and intuitive pathways for users.
- Our experts create SEO-friendly architecture such that the content is easy to digest.
- We base the site architecture on the insights collected from search data and keyword research.
- Google rewards fast-loading websites, and we ensure that your website is one of them.
- The team prioritizes mobile responsiveness because 50% of all traffic comes from mobile.

Why Choose Rainstream as your UI/UX Design Company?
The UI/UX can make or break your digital product, and hiring an in-house team of designers and researchers can be time-consuming. In a world where you need to act and deploy fast, you need a user-first and agile mindset UI/UX agency, like Rainstream. Here’s how we make a difference:
Domain-specific Solutions:
Extensive industry knowledge of SaaS, education, real estate, and eCommerce to design a user experience customised to your users’ needs.
Creative at our Core:
Our out-of-the-box ideas with a strategic implementation approach create UI/ UX design that leaves a lasting impression on your target audience.
Flexible Engagement Models:
Easily scale your design team up and down as needed with our flexible hiring models, like fixed price, hire developers, and time and materials.
Faster Development:
Get well-documented designs that build faster, save time, and reduce coding errors.
Conversion-focused:
We design layouts, architecture, and microinteractions to improve sales, sign-ups, and engagement.
Comparison Between UI/UX of Custom and Template-Based Websites
Custom design offers complete creative freedom and unique brand expression. On the other hand, templates provide cost-effective, quick-to-launch solutions with proven user experience patterns. Let’s understand which one has a better UI/UX:
Feature | Custom Website | Template Website |
---|---|---|
Design flexibility | Fully customizable to brand and as per user needs | Limited to pre-designed templates and styles |
Use experience | Workflows created after thoroughly understanding the users and product | Generic UX, may not suit any targeted audience |
Brand consistency | Unique, brand-aligned visuals and interactions | May require heavy-tweaking as per brand guidelines |
Responsiveness | Custom-designed, so it means responsiveness across all devices | Basic responsiveness, will require some major tweaks |
Development time | Longer due to planning, designing, and testing from scratch | Faster launch as the components are pre-built, only modifications are required |
Cost | Higher upfront investment, but it becomes easy to scale | Lower initial costs, but limitations in terms of scalability |
Frequently Asked Questions (FAQs)
Find answers to common queries about our services and policies.
UI/UX design services focus on creating user-friendly, visually appealing digital interfaces. They improve how users interact with apps or websites, enhancing usability, accessibility, and engagement.
UX/UI boosts ecommerce sales by offering smooth navigation, fast checkout, and engaging design. It reduces cart abandonment and builds trust, leading to better customer retention.
Yes, both are essential. UX ensures the product works well and meets user needs, while UI focuses on look and feel. Combining both creates a seamless, effective user experience.
The cost of UI/UX design ranges between £3,000 - £350,000. Each of our UI/ UX projects can be defined according to the project scope and timeline.
For a simple website, the UI/UX gets completed in 3-4 weeks, while for complicated applications, it may take upto 10 weeks.
Deliverables may include user research, wireframes, UI mockups, prototypes, design systems, usability test reports, and final UI assets ready for development.
Of course, we do. We have redesigned websites, apps, and software across industries like eCommerce, SaaS, real estate, and education. Our redesign process is mostly based on the audit process, competitor analysis, and market research.
Our team employs an agile methodology to manage projects efficiently. It makes us flexible in adapting to changing requirements, while ensuring that we meet deadlines and maintain high-quality design standards. We consider regular communication and collaboration with clients throughout the project.
Of course! Some UI/ UX design tasks, like user behavior analysis, personalization, AI-powered prototyping, A/B testing, and optimization, can be automated using AI tools and features.
Improve UI/UX by conducting user feedback sessions, updating visuals, simplifying navigation, optimizing performance, and aligning design with current user behavior trends.