The cut-off opened in 1868. Soon afterwards, a larger engine shed was built, but still on the opposite side of the bridge to the main part of the station. In May 1893, the station changed its name to "Tonbridge Junction", following the change in the town's name to avoid confusion with the larger Tunbridge Wells. At that time, there were two through platforms, two through roads, and two bay platforms at the west end of the station. These bay platforms served the lines to Redhill and . The indirect line to Tunbridge Wells remained in use until about 1913, after which it was closed and the track dismantled. By November 1919, the up platform station roof bore the name "TONBRIDGE" in white letters. This feature was a navigational aid for aircraft.