The Chatham Main Line is a railway line in England that links London Victoria and Dover Priory / Ramsgate, travelling via Medway (of which the town of Chatham is part, hence the name). Services to Cannon Street follow the route as far as St Mary Cray Junction where they diverge onto the Chislehurst line. Services to Charing Cross as well as some slow Cannon Street services run in parallel from Gillingham to Rochester, diverging once across the River Medway at Rochester Bridge Junction onto the North Kent Line via Gravesend and Dartford.