Olly Alexander
as Ritchie Tozer
Omari Douglas
as Roscoe Babatunde
Lydia West
as Jill Baxter
Nathaniel Curtis
as Ash Mukherjee
Shaun Dooley
as Clive Tozer
Keeley Hawes
as Valerie Tozer
Callum Scott Howells
as Colin Morris-Jones
David Carlyle
as Gregory Finch
Tracy-Ann Oberman
as Carol Carter
Stephen Fry
as Arthur Garrison MP
Neil Patrick Harris
as Henry Coltrane