Part of a special issue on European spatial planning. In "INTERREG IIIB - progress with transnational co-operation programmes in the UK" Jon Jordan examines the impact of the INTERREG IIIB programmes in the UK. Provides tables of the number of UK-led projects and funds drawn down from the programmes and types of organisations participating in the projects. Glenn Millar's article "Working on INTERREG IIIB - experiences from British Waterways" explains the value of transnational project work in British Waterways' development of improved approaches to the issues it needs to address. In "A catalyst for change" Jack O'Connor outlines the benefits that the INTERREG IIIA Republic of Ireland/Northern Ireland Programme has delivered while Steve Samson in "Co-operation across the Channel" explains how the same programme addresses the varied needs of the diverse Franco-British cross-border region. In "INTERREG IIIC - an inter-regional co-operation opportunity for UK planners" Liz Mills considers the UK partners' experience in INTERREG IIIC projects. Stefanie Dühr, Vincent Nadin and Stuart Farthing examine in "Taking forward the spatial visions" the emergence, development and possible future roles of the transnational spatial visions prepared under the INTERREG Community Initiative. Notes.