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Watch The Five Billion Pound Super Sewer online. Maybe available on Youtube, Netflix, PrimeVideo, Hulu, Disney and other legal streaming platforms.

Filmed over three years, charts the progress and setbacks faced by a team of 4000 construction workers tasked with creating London's deepest ever tunnel - directly beneath the river Thames. It also delves into the subterranean world to explore the state of the city's ageing sewer network.