Social security has been undergoing a quiet revolution across the UK. While attention has focused on the roll-out of Universal Credit, many other aspects of the benefits system are devolved, allowing governments in Wales, Scotland and Northern Ireland to take different approaches to welfare. As newly elected MSs and MSPs prepare to take their seats in the Senedd and the Scottish Parliament, and as the issue of welfare reform continues to loom large over Westminster, understanding what these differences are, and what reforms have worked well, could help to improve the system for everyone. What are the key differences in social security across the four nations of the UK, and is it fair that families may be entitled to very different amounts in different parts of the UK? Which reforms have worked best, and hold lessons for other governments? Should we go further in devolving social security, or does the partially-devolved, partially-reserved nature of social security cause problems for claimants in devolved nations? And what are the wider lessons for welfare reform? The Resolution Foundation is hosting an event to debate and answer these questions. Following a presentation of highlights from new research by the Safety Nets project, funded by the Nuffield Foundation and which the Resolution Foundation has contributed to, on social security across the four nations, we will hear from leading experts on what lessons can be learned for further welfare reform. The event will be open for people to physically attend, alongside being broadcast via YouTube and the Resolution Foundation website. Viewers will be able to submit questions to the panel before and during the event via Slido.