Edited sentence: However, they state that this would not be undertaken until after 2015.In its draft Kent Route Utilisation Strategy, Network Rail mentions the possibility of extending the Bakerloo line from Elephant & Castle to Lewisham station and then taking over the Hayes branch line.Network Rail state that this would free up six paths per hour into central London and so increasing capacity on the Tonbridge main line, which would also relieve the junctions around Lewisham station