Responsive Website Design in London

The powerful approach to designing and building mobile-friendly websites

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Responsive website design is a powerful way to create mobile-friendly websites. Cyber-Duck is a leading responsive website design agency, based in London. We offer technical and creative expertise to clients like Cancer Research, the EU and Arsenal FC. Our websites scale seamlessly across devices: resizing structure and content automatically.

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Work with a renowned responsive design agency

Businesses must cater for the growing mobile market. Half of all website traffic comes from smartphones and tablets, of all shapes and sizes. Mobile-friendliness can even influence how high websites rank in organic search results. 

We will help you launch a fully responsive website, whether you need a fresh, unique design or retrofit for an existing site. Based in London, our responsive website design agency has experience in developing bespoke, striking websites in as little as five weeks. We have won some of the most sought-after industry awards for client work, including Webby, Wirehive 100 and UX UK. 

Our mobile strategy and responsive design for GSK’s MaxiNutrition increased mobile conversions by 79%.


Our websites benefit from an ISO accredited user-centred design process, blended with lean and agile management principles. As a responsive design agency, we can target the desires of your specific audience. Our London-based experts tailor experiences across devices with mobile-first production: from content strategy and interaction design, right through to build. By focusing on great user experiences from small screen to big, we can increase conversion rates and ensure return on investment (ROI) for clients.

High performance technologies

Performance is critical on mobile. Website speed and size has a significant impact on abandonment and conversion rates: over half of smartphone users expect websites to load in under four seconds. 

Since 2005, our development experts have created fast, flexible websites that perform consistently across devices. Specialising in the latest HTML5 and CSS3 technologies, the team is well versed in popular responsive frameworks. We’ve even developed Hoisin: our own lightweight, customisable framework, which underpins our best responsive projects. 


Our responsive website design agency can fuel the growth of your business, working as an extension of your team. We would love to hear your ideas!

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