BBC Four HD Tuesday

Michael Portillo travels from Lincoln to York, learning about Britain's canals, poet Philip Larkin's life and work, and performing in a rehearsal of the Barbers' Play - the Baptism

Julia Bradbury explores the work of fell walker Alfred Wainwright, and hikes to the summit of his favourite fell, Haystacks in the Lake District

First episode of the comedy. The death of her husband leaves an upper-class snob in drastically reduced circumstances, with her beloved ancestral pile up for auction

Hyacinth plans a nautical supper, but events take an unexpected turn. Comedy, starring Patricia Routledge

Helen Castor tells the story of Lady Jane Grey and Mary Tudor's battle to succeed to the English throne in 1553

Sam Willis charts how castles came under threat from the cannon during the Wars of the Roses, and how some were transformed into palaces during the Tudor era

Examining how Obama handled the threat of chemical weapons being used by the Syrian regime, as well as how he attempted to avoid being dragged into another war in the Middle East

How the US' reluctance to act after the chemical attack caused Syrian rebels to despair, leaving a vacuum to be filled by the forces of Isis

Helen Castor tells the story of Lady Jane Grey and Mary Tudor's battle to succeed to the English throne in 1553

Sam Willis charts how castles came under threat from the cannon during the Wars of the Roses, and how some were transformed into palaces during the Tudor era

Michael Portillo travels from Lincoln to York, learning about Britain's canals, poet Philip Larkin's life and work, and performing in a rehearsal of the Barbers' Play - the Baptism