S2012 E1 • Rene Redzepi - Head chef, Noma restaurant

S2012 E2 • Mark Serwotka - Public and Commercial Services Union, UK

S2012 E3 • State of the Global Economy

S2012 E4 • Dr Devi Shetty - Indian heart surgeon

S2012 E5 • Graeme Obree - Former cycling World Champion

S2012 E6 • Olli Rehn - European Commissioner for Economic and Monetary Affairs

S2012 E7 • Cheng Siwei - Former Vice Chairman, Standing Committee, NPC, China

S2012 E8 • Zoltán Kovács, Government Communication Minister, Hungary

S2012 E9 • Bassma Kodmani - Executive Committee Member, Syrian National Council

S2012 E10 • Steve McQueen - Artist and film-maker

S2012 E11 • Gus O'Donnell - Former Head of UK Civil Service

S2012 E12 • Wadah Khanfar - Former Director General, Al Jazeera

S2012 E13 • Sir Patrick Stewart - Actor

S2012 E14 • Yemen in Crisis

S2012 E15 • Shehu Sani

S2012 E16 • Edwin Cameron - South African Constitutional Court Judge

S2012 E17 • Gene Sharp - Political theorist

S2012 E18 • Responsible Capitalism

S2012 E19 • Jacek Rostowski - Minister of Finance, Poland

S2012 E20 • Vladimir Yakunin - President, Russian Railways

S2012 E21 • Hilde Johnson

S2012 E22 • John Fahey - President, World Anti-Doping Agency

S2012 E23 • Viviane Reding - Vice President, European Commission

S2012 E24 • John McCain

S2012 E25 • Paul Volcker - Former US Federal Reserve chairman

S2012 E26 • Mohamed Nasheed - Former President of the Maldives

S2012 E27 • Sir Clive Woodward

S2012 E28 • Fawzia Koofi

S2012 E29 • George Papandreou - Prime Minister of Greece, 2009-2011

S2012 E30 • Yevgenia Tymoshenko - Daughter of Yulia Tymoshenko

S2012 E31 • Yoweri Museveni - President of Uganda

S2012 E32 • Georges Chikoti - Angolan Foreign Minister

S2012 E33 • David Miliband - UK Foreign Secretary 2007 - 2010

S2012 E34 • Lord Carey - Archbishop of Canterbury, 1991-2002

S2012 E35 • Egemen Bagis - Turkish Minister for EU Affairs

S2012 E36 • Nana Akufo-Addo - Ghanaian presidential candidate

S2012 E37 • Aimee Mullins - Athlete, actor and model

S2012 E38 • Jacqueline Wilson - Children's author

S2012 E39 • Moncef Marzouki - President of Tunisia

S2012 E40 • Said Ferjani - Ennahda political party, Tunisia

S2012 E41 • Abdel Latif El-Menawy - Former Head of Egyptian state news

S2012 E42 • Mohamed Waheed

S2012 E43 • Otis Williams - The Temptations

S2012 E44 • Dmitri Peskov - Spokesman for Vladimir Putin

S2012 E45 • Lord Prescott - Deputy Prime Minister, 1997-2007

S2012 E46 • Sir Mark Walport - Director, Wellcome Trust

S2012 E47 • Frank Chikane - South African Head of Presidency, 1999 - 2009

S2012 E48 • Len McCluskey

S2012 E49 • Sir Alan Ayckbourn - British Playwright

S2012 E50 • Nabeel Rajab - President of the Bahrain Centre for Human Rights