The 15 Billion Pound Railway

First of two documentaries following the final stages of the construction work on the Elizabeth Line underground railway beneath the streets of London. Cameras follow the engineers, technicians and train staff who are under pressure to complete their section of the project, including building and fitting out 10 brand new stations, learning to drive the new fleet of trains, and testing the 21km twin tunnels beneath London, in a bid to make it safe for the public.