Referring to expected changes in capital requirements, leverage ratios and calls on systemic importance, Jacques de Larosière, a former governor of the Banque de France, said: "Speed, which is good, is not equal to haste, which is bad, and one has to think more than twice before applying these regulations."

De Larosière, who also headed up the International Monetary Fund (IMF), chaired a committee which presented the European Commission with a template for regulatory change in February.

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