David Jessel
В роли: Self - Presenter

John Beggs
В роли: Self (South East Animal Liberation League) (как John Williams)

Tim Biscoe
В роли: Self - Research Defence Society (как Prof. Tim Biscoe)

David Mellor
В роли: Self - Home Office Minister

Dr. Richard Ryder
В роли: Self - RSPCA Animal Experimentation Advisory Committee

John Williams
В роли: Self - South East Animal Liberation League