The lines that head out of Carmarthen to Pembroke, Milford Haven and Fishguard total up to 55 miles, a similar length to London to Brighton. A lot of work to increase capacity has been carried out on these lines over the past few years, but this route would be set before all this work, and during a time when services to Paddington from Fishguard were still running. Proposed Rolling Stock Class 43 in Great Western Trains 'Merlin' livery Operated all GWT services over these lines during this period (late 90s / early 2000s) Class 143 'Pacer' in Valley Lines livery Operated local services alongside Class 150's Class 150/2 'Sprinter' in Valley Lines livery Operated services alongside Pacers Possible DLC 'Arriva Trains Wales Pack' with Class 150/2, Class 158 and Class 175