Following Lowndes ' (2001) injunction for scholars to take the new institutionalism seriously, this paper offers an institutionalist explanation for the development of regeneration partnerships in the UK. Drawing on four complete case studies and evidence from ongoing research into New Deal for Communities (NDC), it argues that UK-style partnerships tend to embody conflicting values and hierarchical patterns of organization. This is therefore a path shaping period, since partnerships have not established themselves as co-ordinating mechanisms built on strong-weak ties.2