Does democracy or autocracy political institutions best allow policymakers to grow their international financial centres? In this presentation, we show how these centres must respond to each other. Democratic inclusion in one place depends on another place. So does its centrality in the global financial system. We describe the importance of this question, tell what the data say, describe our view of the world and the way we must fix our data and finally present our results. Our research has implications from Brexit to Hong Kong post-2047... and everything in-between.