Filmed from 1960 to 1967 with occasional 1980's visits from preserved steam locomotives providing a contrast.
Motive power is mainly London Midland Region with Western Region at Chester.
Branches from the route include Birkenhead via Hooton, the Dyserth branch from Prestatyn, Denbigh from Mold and Rhyl, Blaeanau Ffestiniog and Trawsfyndd from Llandudno Junction and the Amlych branch.
The Port Penrhyn slate quarries to Bethesda and Dinorwic system are also seen with narrow gauge locomotives.
Locations visited include Crewe, Chester, Saltney Junction, Flint, Talacre, Rhyl, Abergele, Llandudno, Llandudno Junction, Bangor, Menai Bridge and Holyhead.
Motive power includes Princess Coronations, Royal Scots, Jubilees, Britannias, Black 5s, 8Fs, Standard Classes and early diesels of Class 40 and 47, usually in green livery.