Kelly Macdonald as Katie Meaghaid

Alice Eve as Lara Tyler

David Tennant as James Arber

Michael Urie as Steve

Federico Castelluccio as Marco

Gil Kolirin as Security guard

Maureen Beattie as Iseabail

Sally Phillips as Emma

Alisha Bailey as Suzelle

Danny Bage as Hotel Doorman

Dylan Moran as Charley

Hannah Bourne as Chloe

Muriel Barker as Mrs. Grainie

Jeannie Fisher as Aileen

Hamish Clark as Angus

James Fleet as William

Sally Howitt as Muireen

Rony Bridges as Roan

Victoria Grove as Anais Anais

Patrick Regis as Hollywood Minister

Tina Gray as Elderly Woman

Gil Kolirin as Security Guard

Ben Addis as Journalist 1

Alex Childs as Host

Achara Kirk as Tourist