Thomasin McKenzie
as Eloise Turner

Anya Taylor-Joy
as Sandie

Matt Smith
as Jack

Rita Tushingham
as Peggy Turner

Michael Ajao
as John

Synnøve Karlsen
as Jocasta

Pauline McLynn
as Carol

Terence Stamp
as Silver-Haired Gentleman

Diana Rigg
as Ms. Collins

Aimée Cassettari
as Eloise's Mother

Colin Mace
as Taxi Driver #1

Jessie Mei Li
as Lara

Kassius Nelson
as Cami

Rebecca Harrod
as Ashley

Alan Mahon
as Toucan Bartender

Connor Calland
as Drunk Student

Josh Zaré
as Student at Party

Jacqui-Lee Pryce
as College Administrator

Elizabeth Berrington
as Ms. Tobin

James Phelps
as Cloakroom Attendant

Oliver Phelps
as Cloakroom Attendant

Beth Singh
as Cilla Black

Paul Brightwell
as Cubby

Will Rogers
as Café de Paris Bartender

Terence Frisch
as Rialto Club Owner

Celeste Dring
as Shop Assistant

Jeanie Wishes
as Marionetta

Andrew Bicknell
as Mr. Pointer

Adam Sopp
as Toucan Drunk

Richard Corgan
as Toucan Drunk's Mate

Michael Mears
as Punter #1

Tom Hartwell
as Punter #2

Paul Hamilton
as Punter #3

Wayne Cater
as Punter #4

Sam Claflin
as Punter #5

Sam Parks
as Punter #6

Alan Ruscoe
as Punter #7

Margaret Nolan
as Sage Barmaid

Christopher Carrico
as Additional Punter

Kent Goldfinch
as Additional Punter

Ian Harrod
as Additional Punter

Ian Hartley
as Additional Punter

Daniel Maggott
as Additional Punter

Richard O'Sullivan
as Additional Punter

Michael Jibson
as Male Detective

Lisa McGrillis
as Female Detective

Al Roberts
as Librarian

Derek Lea
as Taxi Driver #2

Lati Gbaja
as Soho Passerby (uncredited)

Paul Riddell
as Train Passenger (uncredited)

Katrina Vasilieva
as Burlesque Dancer (uncredited)