South-south relationships and the transfer of 'best practice': the case of Johannesburg, South AfricaThe reconfiguration o f econom ic and political pow er globally is reshaping the geographies o f 'best practice' knowledge transfer, with a discernible shift from north-south to south-south learning. In the case o f Johannesburg, South A frica, em bedded patterns o f north-south transfer were at least partially disrupted from around 2 0 0 0 with a new discourse around south-south cooperation and the emergence o f new global coalitions, including IBSA (India, Brazil and South Africa) and BRICS (Brazil, Russia, India, C hina and South Africa). South-south transfer has arguably led to policy solutions that are more appropriate to contexts such as Johannesburg, but south-south engagem ents are not inherently virtuous o r im m une to the pow er inequalities and other pitfalls o f north-south engagements. New, hybridised patterns o f north-south, south-south transfer are em erging within Transnational M un icipa l Networks (TMCs), but these, to o , both entrench and challenge previous relationships. K e yw ords: south-south colla b o ra tio n , best practice transfer, Johannesburg, BRICS, policy m obility