Rob explores the construction of the world's first deep Tube Line known today as the Northern Line, which runs 36 miles through London and connects the boroughs north and south of the Thames. 700,000 passengers rely on it every day.
Rob explores the construction of the world's first deep Tube Line known today as the Northern Line, which runs 36 miles through London and connects the boroughs north and south of the Thames. 700,000 passengers rely on it every day.