 This company had been established by Act of Parliament in 1904, taking over powers awarded to the Portmadoc, Beddgelert & South Snowdon Railway to build a hydro-electric power station in Nant Gwynant for railway purposes, as well as a 2 ft gauge electric railway serving the places named in the 1901 Portmadoc, Beddgelert & South Snowdon Railway Act.With the vision expanding to supply power to north Wales industries, the railway company was divested of its power-generating powers by another 1904 Act but remained under control of the power company; one of its assets was the 2 ft gauge horse-worked Croesor Tramway.Working with Evan Robert Davies – a Pwllheli solicitor and friend of politician David Lloyd George – and Dundee distiller Sir John Henderson Stewart Bt, Jack was a key player in the development of the Welsh Highland Railway, taking over the North Wales Narrow Gauge Railways, reconstructing part of the Croesor Tramway for steam working, linking them with a new railway around Beddgelert and connecting the whole to the Festiniog Railway at Portmadoc.