Griff Rhys Jones's exploration of Britain's rivers continues as he travels from Liverpool to the Humber and attempts to swim the almost-freezing Mersey. Show more

Griff Rhys Jones follows the mighty Severn and its neighbour, the Wye. He also attempts to bog snorkel, meets druids for a ritual water blessing and sleeps in a hermit's cave. Show more

Griff Rhys Jones meets the Sicilian cucumber-growing community of Essex, sails a gunpowder boat and trains with a team of veteran rowers as he explores the Lea. Show more

Dan Snow travels to Mexico to investigate the history, character and legacy of Montezuma, the last great ruler of the Aztecs of Central America. Show more

Andrew Smith journeys across America to try and discover the real Neil Armstrong, a man who, in the four decades since he set foot on the moon, has become increasingly reclusive. Show more

Documentary following the reunion of ten of the wives of Apollo astronauts. They discuss death, danger and divorce, detailing how many of their men struggled to come back to Earth. Show more

Dom Littlewood takes a hair-raising trip up a double-decker car transporter as he follows the delivery of an iconic British motor from the factory to the forecourt. Show more

Griff Rhys Jones travels the wild rivers of Scotland. He heads east, upstream from Kinlochleven, then follows the course of the water downstream to Perth. Show more

Dom Littlewood takes a hair-raising trip up a double-decker car transporter as he follows the delivery of an iconic British motor from the factory to the forecourt. Show more

Art historian Helen Rosslyn, whose husband's ancestor built the Rosslyn Chapel, founded in 1446, is the guide on a journey of discovery around an exquisite building. Show more

Documentary following Carwyn Jones during his final months in office. With behind-the-scenes access, the programme uncovers what it is like to be first minister. Show more