James Griffiths Director Rashida Jones Julia Actor Nick Frost Bruce Garrett Actor, Executive Producer Chris O'Dowd Drew Actor Olivia Colman Sam Actor Ian McShane Ron Parfait Actor Rory Kinnear Gary Actor Wendi McLendon-Covey Carly Actor Alexandra Roach Helen Actor Kayvan Novak Bejan Actor Tim Plester Mickey Actor Liz Cackowski Paula Actor Jon Brown Screenwriter James Biddle Producer Nira Park Producer Jenny Borgars Executive Producer Matthew Justice Executive Producer Danny Perkins Executive Producer Dick Pope Cinematographer Jonathan Amos Film Editing Nina Gold Casting Dick Lunn Production Design Andrea Matheson Art Director Anna Kasabova Set Decoration