Benedict Cumberbatch

Character: Dominic Cummings

Rory Kinnear

Character: Craig Oliver

John Heffernan

Character: Matthew Elliott

Oliver Maltman

Character: Michael Gove

Richard Goulding

Character: Boris Johnson

Simon Paisley Day

Character: Douglas Carswell

Lee Boardman

Character: Arron Banks

Lucy Russell

Character: Elizabeth Denham

Paul Ryan

Character: Nigel Farage

Kyle Soller

Character: Zack Massingham

Liz White

Character: Mary Wakefield

Tim Steed

Character: Daniel Hannan

Kate O'Flynn

Character: Victoria Woodcock

Nicholas Day

Character: John Mills

Tim McMullan

Character: Bernard Jenkin

Richard Durden

Character: Bill Cash

Gavin Spokes

Character: Andrew Cooper

Ronak Patani

Character: Leave Intern Ameet

Mary Antony

Character: Leave Intern Katie

Neal Barry

Character: Geoff

Sophie Stanton

Character: Lyndsey

Henrietta Clemett

Character: Lucy Thomas

Aden Gillett

Character: Robert Mercer

Annabelle Dowler

Character: Focus Group Facilitator

Gabriel Akuwudike

Character: Robin

John Arthur

Character: Roger

Rakie Ayola

Character: Camilla

Jay Simpson

Character: Steve

Heather Coombs

Character: Sandra

Kiran Sonia Sawar

Character: Shamara

Andrew Barclay

Character: Breitbart TV Interviewer

Ian Morine

Character: Boris Johnson Staff Member

Ross Hatt

Character: Policy Strategist

Theresa May

Character: Self (archive footage)

Vladimir Putin

Character: Self (archive footage)

Boris Johnson

Character: Self (archive footage)

Jeremy Corbyn

Character: Self (archive footage)

David Cameron

Character: Self (archive footage)

Winston Churchill

Character: Self (archive footage)

Margaret Thatcher

Character: Self (archive footage)

Mark Gatiss

Character: Peter Mandelson (voice)

Mark Dexter

Character: David Cameron (voice)