Onllwyn and Cwmgwrach to Burrows yard Onllwyn and Cwmgwrach to Burrows yard Margam and Parc Slip to llanharan Miskin and Vale of Glamorgan to Canton Cardiff Valleys and Tidal Sidings Cardiff to Newport Docks, Ebbw Vale, Ponthir, Fifoots, Ebbw Vale and Severn Tunnel Junction Fishguard, Trecwn and Robeston to Trostre Central Wales, Guan-cae-Gurwen and Swansea District Line Lougher Bridge, Swansea and Port Talbot Lougher Bridge, Swansea and Port Talbot