The Valley Lines is the commonly-known name for the network of local train services in valleys of South Wales from Cardiff, Wales. It was the trading name of the Cardiff Railway Company, the franchise which operated most of these services (the Maesteg Line being the exception, which was operated by Wales and West) from privatisation in 1995 until 2001, when it became part of the new Wales and Borders franchise. Both franchises were part of the National Express Group. Since 2003, the franchise has been run by Arriva Trains Wales who have officially dropped the Valley Lines brand and are in the process of applying a new livery to the local fleet based on their corporate colours of turquoise and cream.
The old Vale of Glamorgan Line, on which passenger services were closed under the Beeching Axe, have now re-opened for passenger service, with services from Cardiff to Bridgend, via Barry, Rhoose Cardiff Airport and Llantwit Major. These services were originally advertised to start in April 2005, but commenced on 12 June 2005.
Services on these routes are provided with class 142, 143, 150 and 153 trains, and are typically end-to-end, in that they run from one branch terminus, through Queen Street station (the notional 'hub' of the network), to another branch terminus, e.g. from Pontypridd to Barry Island