Cities require partnerships to deliver a variety of urban services. Public-Private partnerships have been well researched, but often focus on large infrastructure projects such highways, ports, airports and so on. The nuances that urban settings represent - a large and complex stakeholder base, the requirements for several services to be delivered as public and not private goods and so on - have not been adequately discussed in this literature. In my talk I discuss some of the challenges that Urban PPPs face as well as innovative arrangements that have been adopted in the urban setting, particularly partnerships that are more voluntary and less commercial in nature, which also display characteristics of flexibility, adaptability and partnerships that are often missing in traditional infrastructure PPPs.