David Evans Director Colin Firth Paul Ashworth Actor Ruth Gemmell Sarah Hughes Actor Neil Pearson Paul's Dad Actor Lorraine Ashbourne Paul's Mum Actor Mark Strong Steve Actor Holly Aird Jo Actor Ken Stott Ted Actor Stephen Rea Ray Actor Luke Aikman Young Paul Actor Richard Claxton Robert Parker Actor Bea Guard Paul's Sister Actor Annette Ekblom Robert's Mother Actor Peter Quince Frank Actor Charles Cork Rex Actor Bob Curtiss Stan Actor Amanda Posey Producer Stephen Woolley Executive Producer Nik Powell Executive Producer Nick Hornby Writer Matthew F. Leonetti Cinematographer Alan Baumgarten Film Editing Craig Armstrong Original Music Maher Ahmad Production Design Brandt Gordon Art Director Jaro Dick Set Decoration Sophie de Rakoff Costume Design Justine Arteta Casting