Mike Bratton
В роли: Narrator (голос)

William George Armstrong
В роли: Self - Hydraulic Engineer (хроника)

John Miller
В роли: Self - Designer and Entrepreneur (хроника)

C.C. Mitchell
В роли: Self - Royal Navy Engineer (хроника) (как Commander C.C. Mitchell)

Rhys Morgan
В роли: Self - Phd., Director of Education - Royal Academy of Engineering

Kate Mulcahy
В роли: Self - Science Communicator

Michael Reitz
В роли: Self - Rollercoaster Engineer

Andrew Smyth
В роли: Self - Professor of Civil Engineering - Columbia University

Andrew Steele
В роли: Self - Physicist