The last two decades have seen an increasing number of jurisdictions adopting the ‘twin peaks’ model of financial regulation. Since it was pioneered in Australia, the model has been adopted by the Netherlands, Belgium, New Zealand and the United Kingdom. South Africa is currently in the process of changing its model, and it has also been considered by the US. This paper evaluates the twin peaks model as it has been adopted in these jurisdictions and investigates the extent to which there is uniformity in its design and implementation from a regulatory perspective. The comparative analysis indicates that there are many variations in the design of a twin peaks model and that there is no archetypal twin peaks model. In particular, choices need to be made around key elements in areas such as structural design, operational independence and regulatory coordination.