• 
  Hugh Bonneville

  Ian Fletcher
• 
  Hugh Grant

  Hugh Grant
• 
  Jonathan Bailey

  Jack Patterson
• 
  Clare Balding

   Clare Balding (1 episode, 2014)
• 
  Elizabeth Berrington

   Elaine Pearson (1 episode, 2014)
• 
  Monica Dolan

   Tracey Pritchard (4 episodes, 2014)
• 
  Laurence Howarth

   Adam Brady (1 episode, 2014)
• 
  Sarah Parish

   Anna Rampton (4 episodes, 2014)

• 
  Nina Sosanya

   Lucy Freeman (4 episodes, 2014)
• 
  David Tennant

   Narrator (4 episodes, 2014)
• 
  Carol Vorderman

   Carol Vorderman (2 episodes, 2014)
• 
  Jason Watkins

  Simon Harwood
• 
  David Westhead

  Neil Reid
• 
  Alan Yentob

   Alan Yentob / ... (2 episodes, 2014-2015)
• 
  Ophelia Lovibond

   Izzy Gould (4 episodes, 2014)

• 
  Rufus Jones

   David Wilkes (3 episodes, 2014)
• 
  Olivia Colman

   Sally Owen (1 episode, 2014)
• 
  Jenni Murray

   Jenni Murray (1 episode, 2014)
• 
  Nyasha Hatendi

   Reporter (1 episode, 2014)
• 
  Joel Fry

   Karl Marx (2 episodes, 2014-2015)
• 
  Tom Basden

   Dan Shepherd (2 episodes, 2014-2015)
• 
  Hugh Skinner

   Will Humphries (4 episodes, 2014)
• 
  Alex Beckett

   Barney Lumsden (2 episodes, 2014)
• 
  Amani Johara

   Indira Sahni (1 episode, 2014)
• 
  Emil Lager

   Waiter (1 episode, 2014)
• 
  Matt Addis

   Journalist (1 episode, 2014)
• 
  Sara Pascoe

  Coco Lomax
• 
  Max Olesker

  Ben Rosenstern
• 
  Daniel Ings

   Matt Taverner (2 episodes, 2014-2015)
• 
  Ivan Gonzalez

  Jerry Guildencrantz
• 
  Jessica Hynes

  Siobhan Sharpe
• 
  Shelley Conn

   Azia Zamani (2 episodes, 2015)
• 
  Amit Shah

   Sadiq Iqbal (2 episodes, 2015)