Posford Duvivier

Film about the design and building of offshore forts on the Thames Estuary during the second world war.

This film is about some of the maritime activities carried out during the second world war, mostly for the navy, by the consultant engineering firm now known as Posford Duvivier. They were innovative in conception and design and were executed under the direction of civil engineer Guy Maunsell and his partner John Posford, who narrates throughout the film.