The pace of development in the digital, biological and technological worlds is changing and disrupting the way we work and live. From 3D printed buildings, to self-driving taxis, to vertical farming, every part of the UK economy will be affected by this ‘fourth industrial revolution’. Tomorrow’s innovative companies and organisations rely on people who can marry subject expertise with skills and knowledge from outside their individual specialisms, and who approach projects with creativity. In short, the companies leading this industrial revolution need design skills. Modern design is no longer confined to particular sectors or occupations. The skills, principles and practices of design are now widely used across the economy, from banking to retail. Designers, too, have always drawn on a range of different skills, tools and technologies to deliver new ideas, goods and services. This is what makes design unique, and is how it makes products, services and systems more useful, usable and desirable in advanced economies around the world., This research examines the skills that differentiate design from other sectors in the UK economy. This study combines UK and US data to investigate for the first time the relationship between design skills and economic outcomes, focusing explicitly on productivity and innovation. It looks at the relationship between occupations and skills, and finds that where design skills are used, they contribute significantly to the wealth of the nation, greater productivity and more innovation. But it also provides a stark warning about the potential impact of underinvesting in these skills, and the need to better prepare for the economic, technological and political changes ahead. It is time to pay attention to the value of design.