Hugh Grant as Will Freeman

Nicholas Hoult as Marcus Brewer

Toni Collette as Fiona Brewer

Rachel Weisz as Rachel

Natalia Tena as Ellie

Victoria Smurfit as Suzie

Augustus Prew as Ali

Sharon Small as Christine

Madison Cook as Imogen

Jordan Cook as Imogen

Nicholas Hutchison as John

Ryan Speechley as Barney

Joseph Speechley as Barney

Denise Stephenson as Lindsey

Chris Webster as Ellie's Friend

Isabel Brook as Angie

Orlando Thor Newman as Louie, Angie's Kid

Paulette P. Williams as Bitter Ex-Girlfriend

Susannah Doyle as Bitter Ex-Girlfriend

Fritha Goodey as Bitter Ex-Girlfriend

Delma Walsh as Bitter Ex-Girlfriend

Peter Roy as Will's Dad

Rosalind Knight as Lindsey's Mum

Sian Ejiwunmi-Le Berre as Cute Waitress

Joanne Petitt as Hairdresser

Cathy Murphy as Nurse

Mark Heap as Math Teacher

Claire Harman as Skechers Shopgirl

Jason Salkey as Amnesty International Worker Tom

Annabelle Apsion as Amnesty International Worker

Russell Barr as Maitre D'

Joyce Henderson as Moira / SPAT

Jenny Galloway as Frances / SPAT

Janine Duvitski as Caroline / SPAT

Alex Kew as Simon Cosgrove

Murray Lachlan Young as New Year's Eve Party Guest

Matthew James Thomas as Candy Thrower

Aaron Keeling as Candy Thrower

Sidney Livingstone as Park Keeper

Bethany Muir as Child in Supermarket

Tessa Vale as Class Teacher