Run Fatboy Run

Rene Costa

Spectator (uncredited)

Simon Lenagan

Undercover Cop / Dad

Sutara Gayle

Nurse

Harish Patel

Mr. Goshdashtidar

Peter Serafinowicz

TV Commentator

Dylan Moran

Gordon

David Walliams

Man in Bakery

Simon Pegg

Dennis

Anna Tolputt

Receptionist

Hazel Douglas

Older Woman

David Cann

Marathon Official

Hank Azaria

Whit

Thandiwe Newton

Libby

David Schwimmer

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Ruth Sheen

Claudine

Henrietta Clemett

Reception Nurse

T.R. Bowen

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Preston Nyman

Boating Boy (uncredited)

Pandora Colin

Claire

Stephen Merchant

Man with Broken Leg

Simon Day

Vincent

Nevan Finegan

Mickey

Iddo Goldberg

News Reporter

Margaret John

Libby's Grandmother

India de Beaufort

Maya Goshdashtidar

Matthew Fenton

Jake

Ameet Chana

Taxi Driver

Tyrone Huggins

Grover

Chris Hollins

Himself

Denis Lewis

Herself

Gabriel Fleary

Drag Queen

Floella Benjamin

Libby's Mum

David Milner

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