Why do some historical characters live on in the public imagination while others with equal achievements have been all but forgotten? In the first of a new six-part series, Joe Farrell examines the stories of great but forgotten people and asks why they have been so neglected.
The man behind the construction of London's sewers-the biggest civil engineering project of the 19th century-added 20 years to the life expectancy of the average Londoner and made the greatest changes to the face of the city since the Great Fire.
