BBC Four HD

Programmes start at 7.00pm.

Starting in Wakefield, Michael visits the National Coal Mining Museum for England.

Julia Bradbury explores the work of fell walker Alfred Wainwright. Here she climbs Helm Crag, defined by the rock formations at its summit nicknamed the Lion and the Lamb.

Classic sitcom. When a scandal breaks in the City, Jim Hacker and Sir Humphrey cannot agree on who should be the new governor of the Bank of England.

Classic political sitcom. Jim Hacker meets a local councillor who has radical ideas about local government. The PM likes what he hears, unlike Sir Humphrey.

Thomas Cromwell is revealed as a revolutionary who laid the foundations of modern Britain.

Sir Andrew Motion discovers an unpublished poem by Philip Larkin when he visits Hull to meet one of the poet's ex-lovers, Betty Mackereth, speaking of her love for the first time.

1/2. Ken Burns recounts how the collision between two opposing views of the natural world saw the buffalo, which had numbered in the tens of millions, driven to the brink of extinction.