On a Pwllheli-Liverpool composed of early LMS coaches.

Typical Motive Power for the workings from Bangor and the north to the Cambrian were Fowler, Stanier and Fairburn Tank locomotives with a Class Five, the largest permitted on the line, making an appearance usually on a heavily loaded Holiday Express, particularly on Summer Saturdays in the ' fifties, when Butlins Holiday Camp at Penychain was at the peak of popularity.