BBC Four HD

Programmes start at 7.00pm.

Tim Dunn sees Swindon's railway village and explores the past of Milan's monumental station.

Peripatetic gardener Chris Beardshaw flies to the south west in search of hedges. He visits the gardens of RHS Rosemoor in Devon and Antony House in Cornwall.

Stately sitcom. Audrey waits for DeVere to go away before she herself goes on holiday.

Sitcom. Hyacinth decides to have a second attempt at finding a small weekend home in the country, but she and Richard have different views on the word 'small'.

Popular 1970s sitcom about a middle-class, middle-aged rebel. Why is Reggie referring to his mother-in-law as a hippopotamus.

Reggie Perrin needs a month's holiday, but all he gets is an afternoon in a safari park with his wife, daughter, son-in-law and their two 'tiny adults'.

Documentary detailing the killer wave which struck the coast of the Bristol Channel in 1607. Two scientists are increasingly convinced that the wave was actually a tsunami.

A museum in Osaka asks the Mayuyamas for help with artefacts currently hidden away in their archive: an exquisite 800-year-old celadon vase from China and a 16th-century tea bowl.

Documentary. Jim Al-Khalili takes a look at how we've created machines that can simulate, augment, and even outperform the human mind - and why this shouldn't spook us.

Marcus du Sautoy demystifies the hidden world of algorithms, revealing where these 2,000-year-old problem-solvers came from, how they work and what they have achieved.

Peripatetic gardener Chris Beardshaw flies to the south west in search of hedges. He visits the gardens of RHS Rosemoor in Devon and Antony House in Cornwall.

Documentary detailing the killer wave which struck the coast of the Bristol Channel in 1607. Two scientists are increasingly convinced that the wave was actually a tsunami.

Documentary. Jim Al-Khalili takes a look at how we've created machines that can simulate, augment, and even outperform the human mind - and why this shouldn't spook us.

Programmes start at 7.00pm.

Programmes start at 7.00pm.

Fred Dibnah looks at how carpenters have used their talents to transform buildings such as Stokesey Castle, Little Moreton Hall and Harvington Hall.

Ben Robinson unearths the past of Greyabbey, a village on Northern Ireland's beautiful Strangford Lough, and discovers the history of its moneymaking kelp industry.

Dan Snow and team take on the rapids of the Grand Canyon in antique wooden boats to rediscover one of the wild west's great adventures of discovery.

Amateur footage offers new insights into life in prewar Germany and during World War II. Contains some violence and disturbing scenes.

Actor Spencer Banks reflects on his leading role in the 1974 Play for Today Penda's Fen.

An awakened force in the landscape challenges a boy's clear and intense view of the world. Contains scenes which some viewers may find upsetting.

Dan Snow and team take on the rapids of the Grand Canyon in antique wooden boats to rediscover one of the wild west's great adventures of discovery.