Mayor heralds start of Northern line extension as major excavation works get underway in Battersea | London City Hall

Mayor heralds start of Northern line extension as major excavation works get underway in Battersea | London City Hall

(Source. Greater London Authority). • Major works now underway to deliver first Tube extension since Jubilee line ... Boris Johnson MP gave the signal to start up a specially-designed 300m long conveyor belt that will transport the equivalent in weight of 50,000 New Routemaster buses to the banks of the River Thames as part of the project to extend the Northern line from Kennington to Battersea via Nine Elms ...