BBC Four HD

Programmes start at 7.00pm.

Michael Portillo's postwar journey from Merseyside to Teesside resumes at Brayford Pool in Lincoln, where England's oldest canal, the Fossdyke, meets the city of Lincoln.

Julia Bradbury explores the work of Britain's well-known fell walker and author Alfred Wainwright. She is in the Western Lakes to walk to the summit of the Haystacks fell.

Sitcom. Audrey fforbes-Hamilton, an upper-class widow, is forced into an alliance with a self-made man in a bid to keep her stately home.

Sitcom about an obsessive snob. When Hyacinth plans a nautical supper, events take an unexpected turn - and so does the boat.

Helen Castor explores the lives of the Tudor queens Jane, Mary and Elizabeth, and how each struggled with wearing a crown that was made for a male head.

Sam Willis looks at how castles survived into the Tudor era. But these strategic seats of power had to become palaces to impress monarchs such as Elizabeth I.

Obama warns the Syrian regime against considering using chemical weapons. Contains some violence and disturbing scenes.

America's unwillingness to act after a chemical attack causes Syrian rebels to despair. Contains graphic violence and disturbing scenes.

Helen Castor explores the lives of the Tudor queens Jane, Mary and Elizabeth, and how each struggled with wearing a crown that was made for a male head.

Sam Willis looks at how castles survived into the Tudor era. But these strategic seats of power had to become palaces to impress monarchs such as Elizabeth I.

Michael Portillo's postwar journey from Merseyside to Teesside resumes at Brayford Pool in Lincoln, where England's oldest canal, the Fossdyke, meets the city of Lincoln.

Programmes start at 7.00pm.

Programmes start at 7.00pm.

Michael Portillo is in York, a paradise for rail enthusiasts.

Series in which Julia Bradbury explores the work of Britain's greatest fell walker Alfred Wainwright. Julia climbs her first mountain, Blencathra, and tackles Sharp Edge.

A look at the artistic legacy of Rome's mad, bad and dangerous emperors, including Claudius's pleasure palace and the cave where Tiberius held wild parties.

Empire Without Limit. Mary Beard looks back on her 2016 series on the ancient world.

Mary Beard takes in the mythology, history and archaeology of Rome. In the first episode, Mary reaches back to the myths and legends of the origins of Rome.

Livia engineers the downfall of Julia, who is banished. Tiberius is recalled to Rome. Claudius finds a friend in Herod, king of the Jews.

Drama series chronicling the reigns of the Roman emperors. The Imperial Army on the Rhine has been wiped out, and Tiberius is sent to avenge the defeat.

A look at the artistic legacy of Rome's mad, bad and dangerous emperors, including Claudius's pleasure palace and the cave where Tiberius held wild parties. Deals with adult themes.

Julia Bradbury explores the work of Britain's well-known fell walker and author Alfred Wainwright. She is in the Western Lakes to walk to the summit of the Haystacks fell.

Series in which Julia Bradbury explores the work of Britain's greatest fell walker Alfred Wainwright. Julia climbs her first mountain, Blencathra, and tackles Sharp Edge.

Mary reaches back to the myths and legends of the origins of Rome.

Michael Portillo is in York, a paradise for rail enthusiasts.

Programmes start at 7.00pm.

Programmes start at 7.00pm.

Michael Portillo confronts a detachment of Gurkhas, produces a fine heritage cheese and discovers a monster cracker that is key to making plastic.

Archaeologist Ben Robinson explores the history of the village of Cromford in Derbyshire.

Raised by kindly farmers, a young Clark Kent moves to Metropolis to fight evil.

Film following Christopher Reeve's fight to regain his ability to breathe on his own.

Michael Parkinson in conversation with Mel Smith, Kenneth Griffith and Christopher Reeve.