This concluding episode begins on the stunning Pembrokeshire coast. From the request stop of Penally, Paul visits the trenches built for training during World War I. At Luxulyan in Cornwall, Paul looks for the hidden remains of local china clay mines. In Greater Manchester, Paul visits Reddish South - a request stop famous for having only one train a week. And for his final stop of the series, Paul goes to Corrour on the glorious West Highland Line, with a stop that's ten miles to the nearest public road.