Matt

Martin Freeman

Sam (as Jessica Stevenson)

Jessica Hynes

Josef Worral

Stephen Mangan

Josef

Steve Mangan

Joanna

Olivia Colman

Michael

Robert Webb

Isabelle

Meredith MacNeill

Archi Heron

Vincent Franklin

Snoopy

Marc Wootton

Gregory

Jason Watkins

Vivien Kay-Wylie

Felicity Montagu

Antony

Jimmy Carr

Joanna's Mother

Selina Cadell

Sam's Mum

Alison Steadman

Sam's Father

Ron Cook

Marriage Counsellor

Julia Davis

Jen

Sarah Hadland

Tennis Coach

Jesus de Miguel

Judge

Phil Nichol

Judge

Caroline Reid

Vivienne's Assistant

Kate Smallwood

Judge

Nickolas Grace

Registrar

Mark Heap

Wedding Show Make Over Host

Caryn Franklin

Naturist Violinist

Helen Ryan

Cliff Richard

Jimmy Jerman

Dinosaur Bride

Lucy Chalkley

Dinosaur Groom

Jonathan Rhodes

Elvis Groom

Peter Isitt

Roman Bride

Alexandra McGuinness

Roman Groom

Wuzza Conlon

Diver Groom

Ian Van Der Heyden

Clown Bride

Anna Tolputt

Clown Groom

Joe England

Musical Dancer

Jill Goldston

Musical Dancer

Graeme Henderson

Musical Dancer

Kirsty Hoiles

Jodie Upp (uncredited)

Clare-Louise English

Naturist (uncredited)

Tina Yates

Snoopy's Band

Drew Pearce