Declan Donnelly

Ray Santilli

Anthony McPartlin

Gary Shoefield

Bill Pullman

Morgan Banner

Götz Otto

Laszlo Voros

Morwenna Banks

Jasmine

Omid Djalili

Melik

Harry Dean Stanton

Harvey

Mike Blakeley

Camera Team

Matthew Blakeley

Camera Team

John Shrapnel

Michael Kuhn

Madeleine Moffat

Nan

John Cater

Maurice

Lee Oakes

Edgar

Perry Benson

Trading Standards Officer

Jimmy Carr

Gary's Boss

Winston Thomas

Zachary

Michael Rouse

Young Harvey

Pam Shaw

Aunty P

David Threlfall

Jeffrey

Andrew Greenough

Preston

Stephanie Metcalfe

Doreen

Jonathan Coy

Museum Director

Ian Porter

Pentagon Officer

Shane Rimmer

Colonel

Naima Belkhiati

French TV Buyer

Miguel Angel Plaza

Mr. Gonzalez

Jeff Harding

CIA Agent

Kevin Breznahan

Junior TV Exec

Martin McDougall

Middle Ranking TV Exec

Lachele Carl

TV News Anchor

Paul Birchard

Senior TV Exec

Sam Douglas

Network President

Adriana Yanez

Stewardess - Argentina

Nichole Hiltz

Amber Fuentes

Luis Soto

Peruvian TV Host

Cristina Piaget

Interviewer

Christina Souza

Stewardess - Mexicana

Bradley Lavelle

NY host

Orson Bean

Homeless Man

Ray Santilli

Self

Gary Shoefield

Self

Luke Brandon Field

Steve (uncredited)

Julia Bridgeman

Geek Girl

Sophia Ellis

UFO Enthusiast

Jonathan Frakes

Self

Flor Kent

Stewardess

Peter Rnic

The Russian Spy

Todd Sherry

Flight Attendant

Peter Willcock

Worker at Gary's Office

Chris Wilson

Alien Fan

Gillian Goodman

Seller