Sir Paul Tucker is chair of the Systemic Risk Council, and a fellow at the Mossavar-Rahmani Center for Business and Government at Harvard Kennedy School. He is currently completing a book for Princeton University Press, provisionally titled Unelected Power: Democratic Legitimacy for Central Banks and the Regulatory State. His other activities include being a director at Swiss Re, a senior fellow at the Harvard Center for European Studies, a Visiting Fellow of Nuffield College Oxford, and a Governor of the Ditchley Foundation. Previously, he was Deputy Governor at the Bank of England, sitting on its monetary policy, financial stability, and prudential policy committees. Internationally, he was a member of the G20 Financial Stability Board, leading its work on too big to fail; a director of the Bank for International Settlements, and chair of its Committee for Payment and Settlement Systems.