The B102 is a short B-road to the north of the City of London.
It starts on the A1200 New North Road and starts off following the Regents Canal. It soon turns away to the north and heads up Southgate Road to end on the A104 Balls Pond Road. It runs along the boundary between the London Boroughs of Hackney and Islington for its entire length.
When originally classified in 1922, the road started further south on New North Road. It ran along the western end of Mintern Street then headed north along Bridport Place, part of which is now a pedestrian footpath through Shoreditch Park. Presumably the creation of the park caused the rerouting of the road.