WELSHPOOL & LLANFAIR LIGHT RAILWAY (W&L). A GREAT gift idea for the Locomotive & W&L Railway Enthusiast (as well as Stamp Collector) and ideal for framing. In 1903, the 9-mile 2ft 6in gauge line was opened, connecting Llanfair Caereinion with the Cambrian Railways at Welshpool in Powys.