The IfG DevoLab is a new initiative from the Institute for Government dedicated to exploring the innovations enabled by devolution, learning from the results, and sharing the lessons so that places can take better decisions about how to use devolved powers and budgets. On 6 November, the IfG hosted its third IfG DevoLab event in Leeds, at which speakers from three regions set out how the powers and profile of mayors are being used to improve transport connectivity within and between their regions. The three case studies presented at IfG DevoLab #3 were: ‘Improving transport connectivity in West Yorkshire’, by Councillor Susan Hinchcliffe, Leader of Bradford City Council and Chair of the West Yorkshire Transport Committee ‘Connecting Liverpool City Region through Merseyrail’, by Huw Jenkins, Lead Officer - Transport Policy at Liverpool City Region Combined Authority ‘Mayoral partnerships with Great British Railways’ by Richard Crabtree, Head of Mayoral Partnerships at Shadow Great British Railways The three speakers were joined by Tom Bridges, UK Government Business Leader at Arup, for a broader discussion of how devolution can improve transport connectivity, how the government can support innovation and learning, and whether there is a case for further devolution in this area. This event was chaired by Jill Rutter, Senior Fellow at the Institute for Government. Insights from this discussion will inform a published policy briefing containing the three case studies and a synthesis of key lessons. We would like to thank Arup for kindly supporting this event. We are also grateful to our strategic partner L&G for its wider support of the IfG DevoLab series.