Dan Snow looks at how the 19th-century Navy used gunboat diplomacy to push British interests further afield, before losing its naval supremacy after the First World War. Show more

Home movies tell the story of how, when steam started to disappear in the 1950s, volunteers were able to save some of the tracks and the engines that ran on them. Show more

Swedish-Danish crime drama. A captive Jeanette's whereabouts are located by Freddie with a tracking device. Saga returns from suspension to help Henrik follow a tip on who's behind the abduction. Show more

Danish-Swedish crime series. Rasmus has discovered Freddie's abandoned helicopter in a disused concrete factory and is told to wait for back-up. Show more

Iain Stewart reveals the stories and science behind some of the world's most dramatic earthquakes, including how 1960s Cold War spying gave scientists a clue to understanding them. Show more

Iain Stewart journeys across the oceans to explore stories about the most powerful giant waves in history, including how one caused the ruin of an entire ancient civilization. Show more

Series exploring topical scientific issues. A look at how new planets being discovered are forcing scientists to rewrite the history of our own solar system. Show more

Ian Hislop takes a look at the notorious Beeching Report of 1963, which led to the closure of a third of the nation's railway lines and forced thousands of people onto the road. Show more

Home movies tell the story of how, when steam started to disappear in the 1950s, volunteers were able to save some of the tracks and the engines that ran on them. Show more