Brendan Patricks as Duncan

Kelly Adams as No. 1: Wendy

Jane March as No. 2: Olive

Cécile Cassel as No. 3: Rhona

Edith Bukovics as No. 4: Natalie

Naomie Harris as No. 5: Gemma

Daniel Hoffmann-Gill as Will

Sara Poyzer as No. 1 - Stewardess

Katie Stratford as No. 1 - Plane Passenger

Grant Sheehan as No. 1 - Plane Passenger

Johnny Ball as No. 1 - Self

Sally Christopher as No. 1 - Wendy's Boss

Ellen Hughes as No. 1 - Duncan's Sister

Duncan Wisbey as No. 1 - Divine Dating (voice)

Molly Line as No. 1 - Divine Dating Angel

John Line as No. 1 - God

Abigail Freeman as No. 1 - Young Wendy

Joe Malone as No. 1 - Young Duncan

Carole Philip as No. 1 - Duncan's Mother

Ian Smith as No. 1 - Duncan's Father

James Thorne as No. 1 - Alex

Charlie Gee as No. 1 - Party Guest

India Lloyd-Evans as No. 1 - Party Guest

Donna Shilling as No. 1 - Interpretive Dancer

Jean Kesler as No. 2 - Waiter

Phillip Lowe as No. 2 - Doctor

Michael Douglas as No. 3 - Shoe Expert

Aziz Mirza as No. 3 - Mr. Paul

Rod Mitchell as No. 3 - Man on Street

Neil Chordia as No. 4 - Party Guest

Steve Ryde as No. 4 - Accountant on Bus

Michael Beckett as No. 4 - Accountant on Street

Melvin Odoom as No. 4 - Agent 1

Lee Barnett as No. 4 - Agent 2

Dave Chapman as No. 4 - Agent 3 / Guppy (voice)

Ian Kirkby as No. 4 - Agent 4

Julian Machet as No. 4 - Married Couple in Park

Judy Machet as No. 4 - Married Couple in Park

Susanna Fiore as No. 4 - Girl on Stairs

Holly Lucas as No. 4 - Girl on Platform

Deepti Burton as No. 4 - Girl at Restaurant and Crossing

Sophie Coen as No. 4 - Girl at Restaurant and Crossing

Sarah Neales as No. 4 - Girl at Restaurant and Crossing

India Gibbs as No. 4 - Girl at Restaurant and Crossing

Aaron Anderson as No. 4 - Dinner Party Guest

Ben Bishop as No. 5 - Supermarket Security

Omar Kelly as No. 5 - Supermarket Cashier

Tia Campbell as No. 5 - Young Gemma

Louis Greatorex as No. 5 - Giles

Sam Jarvis as No. 5 - Kid at Camp

Max Jones as No. 5 - Kid at Camp

Adham Nazir as No. 5 - Kid at Camp

Rielly Newbold as No. 5 - Kid at Camp

Matt O'Donnell as No. 5 - Kid at Camp

Chloe Richardson as No. 5 - Kid at Camp

Molly Windsor as No. 5 - Kid at Camp

Lawrence O'Connor as No. 5 - Rochefoucauld

S.M. Greenfield as No. 5 - Self

Cora Aarnoutse as No. 5 - Architect Party Guest

Sarah Rodrigues-Miller as No. 5 - Paula

Lucy Pullin as No. 5 - Girl at Houseboat Party

Michael Sheen as No. 5 - Detective Burnam

Chris Gascoyne as No. 5 - Detective Lister

Valentino Piazzi as No. 5 - Paris Maitre d'

Jeremy Deboever as No. 5 - Paris Hotel Concierge

Christophe LaJoinie as No. 5 - Paris Hotel Concierge

Yassine Khaldi as No. 5 - Paris Hotel Doorman

Kevin Suhawon as No. 5 - Paris Hotel Doorman

Nathalie as No. 5 - 'The Other Woman' in Paris

Gail Renard as No. 5 - Award Guest

Iain Lauchlan as No. 5 - Award Guest

Sveinung Oppegaard as No. 5 - Bar Patron

Mark Whiteley as No. 5 - Vox Pop

Annabel Hibbard as No. 5 - Vox Pop

Tejinder Jouhal as No. 5 - Movie Patron

H.K.Y. Chan as No. 5 - Psychiatrist

Nicholas Asbury as No. 5 - Shakespeare

Denise Robertson as No. 5 - Agony Aunt

Kate Paul as No. 5 - Angela

Ian Kirkby as Duncan World - Tour Guide

Mark Benton as Duncan World - Rollercoaster Alan

Brendan O'Hea as Duncan World - Ted

Harry Buckley as Duncan World - Boy on Tram

Lauren Carey as Duncan World Guest

Libby Phillips as Duncan World Guest

Tim Howell as Duncan World Guest

Zoe Ward as Duncan World Guest

Joanna Davies as Duncan World Guest

Coren Yates as Duncan World Guest

Emily Morgan as Duncan World Guest