Nick Frost as Bruce

Chris O'Dowd as Drew

Olivia Colman as Sam

Rashida Jones as Julia

Kayvan Novak as Bejan

Ian McShane as Ron Parfitt

Rory Kinnear as Gary

Alexandra Roach as Helen

Isabella Steinbarth as Young Sam

Steve Oram as Security Guard Kevin

Janine Wood as Female Client

Tim Plester as Mickey

Wendi McLendon-Covey as Carly

Brandon Robinson as Bully #1

Louis Kyriacou as Bully #2

Kieran Gaffney as Bully #3

Susana Montero as Gloria

Yanet Fuentes as Alicia

Michael Keat as Santo Vito MC (as Miguel Mantovani)

Archibald Easton as Santo Vito MC (as Archerio)

Simon Pegg as Driver during car park dance off (uncredited)

Ben Radcliffe as Young Bruce