Comparing London and Frankfurt as world cities: a relational study of contemporary urban change BeaverstockJonathan V. HoylerMichael PainKathryn TaylorPeter J. 2012 The report examines changing relations between London and Frankfurt with the introduction of a single European currency and the decision to locate the European Central Bank in Frankfurt. Based on interviews with key personnel in global financial and business service firms and institutions in both cities, the findings support a network model of inter-city relations, which, the authors contend, is more appropriate than the simplistic competition model that dominates public discussion.