New Kent Road is a 1 kilometre (0.6 mi) road in the London Borough of Southwark. The road was created in 1751 when the Turnpike Trust upgraded a local footpath. This was done as part of the general road improvements associated with the creation of Westminster Bridge; in effect it was possible to travel from the West End/Westminster to the south-east without having to go via the Borough of Southwark but could now cross St George's Fields to the junction of Newington Causeway and Newington Butts which is where New Kent Road starts at Elephant and Castle.
The Wikipedia page is 
See also Old Kent Road