Paul begins his tour in the Scottish Highlands and Cumbria, before heading to Pembrokeshire and a wishing well in Cornwall. There's also salmon farming, low-level nuclear waste and fell running.

Paul Merton visits more of Britain's railway request stops, including Beasdale, where the Special Operations Executive taught espionage in World War Two. And Pontarddulais - a Welsh wedding town.

Paul visits a training camp from World War I on the Pembrokeshire coast. There's a Manchester stop with only one train a week and the remote stop of Corrour on the West Highland Line.