There is a growing national debate about the role and future of the UK in a changing Europe. Trends in public opinion, divides in the established parties over the country's EU membership, and the rise of 'hard' Eurosceptic political parties like the UK Independence Party (Ukip) underscore the need for high quality evidence and analysis to inform this debate. However, and as one scoping report for the ESRC notes, Euroscepticism within the United Kingdom is actually an under-researched area. This contrasts sharply to a rapidly growing body of literature on manifestations of Euroscepticism in other EU member states. Meanwhile, even fewer researchers have sought to make their research and findings accessible to a wider audience of non-academics. The aim of this innovative and collaborative Fellowship is to address these gaps. It is focused squarely on public (i.e. attitudes toward the EU) and party-based Euroscepticism (i.e. electoral and membership support for parties such as Ukip and the strategies and messages of such groups). What are the drivers of Eurosceptic attitudes and public support for openly Eurosceptic political parties such as Ukip? What groups in society are especially receptive to Eurosceptic messages and campaigns? How do Eurosceptic attitudes vary across social classes, generations, ethnic groups and regions? What impact is party-based Euroscepticism having on our party system? And how might policy makers, practitioners, the media and public make sense of this challenge and navigate the associated issues? Answering these questions in an accessible and outward-facing manner will significantly inform the wider national debate about the future of the UK in a changing Europe. To do so, the Fellowship draws upon and updates recent academic research on these questions that has only just begun to impact upon non-academic communities. It will add new data to existing datasets that are centred on these questions and then, with the ESRC and the London-based think tank Chatham House, communicate the power of social science through a series of high profile and accessible outputs. Workshops with different groups of stakeholders, a series of evidence briefings, blogs, a final report, an accompanying launch event and social media will all be used to disseminate social science research on these areas to a wide and diverse audience.