The Five Billion Pound Super Sewer

Filmed over three years, The Five Billion Pound Super Sewer 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.

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0 trackers | Status: Ended | Airs on BBC Two | Tuesday 9:00 PM