• The Rt Hon David CAMERON.  Formerly Prime Minister, First Lord of the Treasury and Minister for the Civil service.
  • Sir Simon FRASER, GCMG.  Formerly Permanent Under Secretary and Head of the Diplomatic Service, Foreign and Commonwealth Office.
  • Professor Sir Michael HOWARD, OM, CH, CBE, MC, FBA, FRHistS.  Emeritus Professor of Modern History, University of Oxford.
  • The Rt Hon Lord HURD OF WESTWELL, CH, CBE.  Formerly Secretary of State for Foreign and Commonwealth Affairs.
  • The Honorable Roy MACLAREN, PC.  Formerly Canadian High Commissioner to the United Kingdom and Minister of Trade.
  • The Rt Hon Sir John MAJOR, KG, CH.  Former Prime Minister of the United Kingdom and Chairman of The Ditchley Foundation.
  • The Rt Hon David MILIBAND.  President and CEO, International Rescue Committee. Formerly Secretary of State for Foreign and Commonwealth Affairs.
  • Judge Hisashi OWADA.  Judge at the International Court of Justice.  Formerly Permanent Representative of Japan to the United Nations.
  • The Rt Hon Lord PATTEN OF BARNES, CH.  Chancellor of Oxford University and Chairman of the BBC Trust.  Formerly Member of  the European Commission and Governor of Hong Kong.
  • Lord REES of Ludlow, O.M., F.R.S., Hon. F.B.A.   Astronomer Royal.  Formerly Master, Trinity College, Cambridge University.
  • The Lord RICKETTS, GCMG.  Formerly HM Ambassador to France and National Security Adviser, Cabinet Office.
  • The Rt Hon Sir Malcolm RIFKIND, KCMG, QC.  Formerly Secretary of State for Foreign and Commonwealth Affairs.
  • The Rt Hon Jack STRAW.  Formerly Foreign Secretary, Home Secretary and Lord Chancellor.
  • The Rt Hon Baroness WILLIAMS OF CROSBY.  Formerly Secretary of State for Education and Science.