St Trinian's

Talulah Riley

Annabelle Fritton

Rupert Everett

Camilla Fritton / Carnaby Fritton

Gemma Arterton

Kelly Jones

Colin Firth

Geoffrey Thwaites

Lena Headey

Miss Dickinson

Jodie Whittaker

Beverly

Russell Brand

Flash Harry

Anna Chancellor

Miss Bagstock

Juno Temple

Celia

Tamsin Egerton

Chelsea Parker

Antonia Bernath

Chloe

Amara Karan

Peaches

Paloma Faith

Andrea

Kathryn Drysdale

Taylor

Lily Cole

Polly

Holly Mackie

Tara

Cloe Mackie

Tania

Lucy Punch

Verity Thwaites

Fenella Woolgar

Miss Cleaver

Celia Imrie

Hausmutter

Toby Jones

Schatzmeister

Caterina Murino

Miss Maupassant

Stephen Fry

Stephen Fry

Mischa Barton

JJ French

Tereza Srbova

Anoushka

Millie Foster

Saffron

Nathaniel Parker

Chairman of the National Gallery

Cheryl

School Band Member

Nadine Coyle

School Band Member

Sarah Harding

School Band Member

Nicola Roberts

School Band Member

Kimberley Walsh

School Band Member

Esme Thompson

1st Year Bookie

Bel Parker

Aerial Girl

Theo Cross

Art Teacher

James Rawlings

Press Secretary

Ben Willbond

Damaged Inspector

Emily Bevan

Female Inspector

John Thompson

Male Inspector

Steve Furst

Bank Manager

Preston Thompson

Boy at the Party

Cato Sandford

Bedales Pupil 1

Jonathan Bailey

Bedales Pupil 2

Denise Stephenson

Denise

Andrew Buckley

Guard

Jody Halse

Guard

Richard Glover

Floor Runner

Jeremy Thompson

Sky Newscaster

Cloi Mckee

Tania

Rene Costa

Paramedic (uncredited)