The Chatham Main Line is a railway line in the United Kingdom that connects the city of London to Chatham in Kent. It is part of the Southeastern network and serves several important stations, including Rochester and Gillingham. The line is primarily used for passenger services, providing vital transport links for commuters and travelers. Opened in the mid-19th century, the Chatham Main Line has undergone various upgrades and electrification to improve efficiency and service frequency. It plays a crucial role in connecting the Medway Towns to the capital, facilitating both local and long-distance travel for residents and visitors alike.