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Cerys Matthews is given an access-all-areas pass to St Fagans National Museum of History in Cardiff as part of the BBC's Museum Passion season

Narrowboater Robbie Cumming faces a journey of many challenges as he runs aground and breaks down in Nottingham

Margo has a burglar alarm installed, but Tom and Barbara claim they have nothing left worth stealing. Jerry is convinced he has failed to succeed his boss as head of the firm

A territorial battle develops at Number 10. Sir Humphrey has skilfully moved the PM's political adviser Dorothy Wainwright out of her office, but she insists on moving back

Conclusion. Dan Snow examines the ways in which the Celts saved Britain from cultural oblivion during the Dark Ages

An investigation into the Gunpowder Plot of 1605, exploring how a group of Catholic Englishmen became so radicalised they attempted to destroy Parliament

A look back at the glamorous heyday of the jet set, from the 1950s to the 1970s, when the rich and famous fascinated the public as they flew around the world

The evolution of the Arthurian legend through the literature of the medieval age, revealing that King Arthur is not the great national hero he is usually considered to be

Profile of the English surrealist artist, who was a key figure in the movement's heyday in 1930s Paris, but remained a virtual unknown in the UK having moved to Mexico

An investigation into the Gunpowder Plot of 1605, exploring how a group of Catholic Englishmen became so radicalised they attempted to destroy Parliament

Narrowboater Robbie Cumming faces a journey of many challenges as he runs aground and breaks down in Nottingham

Conclusion. Dan Snow examines the ways in which the Celts saved Britain from cultural oblivion during the Dark Ages