Liz Bonnin
В роли: Self - Narrator (голос)

Garel Rhys
В роли: Self - Cardiff Business School (как Prof. Garel Rhys)

Derek Hudd
В роли: Self - Ferryman, Severn Ferry

Dan Cruickshank
В роли: Self - Architectural Historian

Mike Parsons
В роли: Self - Design Engineer, Severn Bridge (как Michael Parsons)

John Howard
В роли: Self - Foundations Contractor, Severn Bridge (хроника) (как Sir John Howard)

Tom Salmon
В роли: Self - BBC Reporter (хроника)

John Evans
В роли: Self - Site Engineer, Severn Bridge

Jerry Gurney
В роли: Self - Foundations Engineer, Severn Bridge

Veronica Crump
В роли: Self - Niece of Jack Hollins, Skipper of Safety Launch

Chris Witts
В роли: Self - Deckhand, 'Wyresdale H'

Deborah Jones
В роли: Self - Daughter of John Newton, Died in Collison with 'Wyresdale H'

Graham Nash
В роли: Self - Construction Supervisor, Severn Bridge

Cliff Michelmore
В роли: Self - TV Presenter (хроника)

David Nelmes
В роли: Self - Son of Albert Nelmes

Judith English
В роли: Self - Daughter of Albert Nelmes

Howard Peterson
В роли: Self - High-Wire Labourer, Severn Bridge

Brian Hughes
В роли: Self - Labourer, Severn Bridge

David Penfold
В роли: Self - Safety Launch Crew

Frank White
В роли: Self - Fairfields Shipyard

Tom Wyatt
В роли: Self - Wind Engineer

John Roberts
В роли: Self - Deckhand, 'Severn Knave'

Jonathan Glancey
В роли: Self - Architectural Writer