Mr David Miliband, President and CEO, International Rescue Committee

President and CEO, International Rescue Committee 10 May 2016

Lt. General Ben Hodges, Commander of the US Army, Europe

Commander of the US Army, Europe 8 April 2016

Sir Martin Sorrell, CEO, WPP plc

CEO, WPP plc 15 November 2015

Rt Hon John Key, Prime Minister of New Zealand

Prime Minister of New Zealand 30 October 2015

Mark Carney, Governor of the Bank of England

Governor of the Bank of England 15 October 2015