Hugh Bonneville narrates a journey through the rolling hills of England's south-west on the West Somerset Railway created by Isambard Kingdom Brunel. Widely recognised as one of the greatest engineers of all time, Brunel's remarkable railways and structures are known worldwide. This episode travels along his railway through the Quantock Hills to the Bristol Channel.

From Whitby to Pickering, aerial views of the stunning North Yorkshire Moors Railway reveal the profound impact George Stephenson's steam revolution had on people, land, industry and trade 

Aerial cameras track the Ffestiniog Railway as it carves a path through of Eryri changing Welsh history, from Porthmadog to the slate mines of Blaenau Ffestiniog

The first episode tracks the Jacobite Railway, which runs through the Scottish Highlands from Fort William to Mallaig. The programme visits the site of Bonnie Prince Charlie's hideout, and explores the history of the Jacobite Rebellion.