From the August 1980 North Wales pictures.

A regular Class 25 hauled train in 1980 was the 13.40 Manchester - Llandudno summer additional train seen here at Chester with 25056.  The loco would return from Llandudno with the 16.42 service to Crewe and subsequently work the 20.30 Crewe - Bangor as the third leg of the diagram.