Swanline is the name of the local rail service from Swansea to Cardiff Central, on the South Wales Main Line.
The Swanline service was launched in June 1994, following the construction of five new stations at Pyle, Baglan, Briton Ferry, Skewen and Llansamlet on the existing South Wales Main Line.
In 1999, the company halved the service to two-hourly, citing poor passenger usage and offering to purchase the rolling stock for use elsewhere.
The Swanline service itself is regarded as unattractive to users at its current low frequency, with extremely restricted journey to work options for Swansea commuters, but takes up valuable space on the busy section of line between Bridgend and Cardiff.
This would provide the Swansea Bay area with a more frequent, hourly service using the same resources (two trainsets).