Woolwich Arsenal station is a National Rail and Docklands Light Railway interchange station located in Woolwich in the London Borough of Greenwich . It acts as a local station on the North Kent Line between London and Gillingham , served by Southeastern , and is the southern terminus of the Woolwich Arsenal branch of the Docklands Light Railway . Woolwich Arsenal was expanded in 2009 , when Transport for London completed the construction of an extension of the London City Airport branch of the Docklands Light Railway from King George V to Woolwich Arsenal , which is the branch 's new terminus .