BBC Four HD

Programmes start at 7.00pm.

Documentary series. A look at southern Thailand, known for its natural beauty. For the animals that live here, this is a natural wonderland.

Documentary following a team of underwater archaeologists and experts as they use CGI to reveal the secrets of Pavlopetri in Greece, the world's oldest submerged city.

Robert Robinson hosts the game of word definitions and deceptions. Joining Frank Muir and Patrick Campbell are Patrick Mower, Russell Harty, Nanette Newman and Gabrielle Drake.

Joseph Cooper invites viewers to match their musical wits against Joyce Grenfell, David Attenborough and Richard Baker. With guest musician Sir Keith Faulkner.

... A fascinating look at the colourful career of architect Frank Gehry. From 2015. Contains some strong language.

A profile of architect Frank Gehry, acclaimed worldwide for his audacious and distinctive buildings. First broadcast in 1993.

Brenda Emmanus meets and profiles ten great living British designers, to find out what inspires them and explore how they have responded to society's evolving tastes.

Writer Ian Rankin investigates The Strange Case of Dr Jekyll and Mr Hyde, tracing Robert Louis Stevenson's story back to events in Stevenson's childhood.

Documentary following a team of underwater archaeologists and experts as they use CGI to reveal the secrets of Pavlopetri in Greece, the world's oldest submerged city.

Documentary series. A look at southern Thailand, known for its natural beauty. For the animals that live here, this is a natural wonderland.

Programmes start at 7.00pm.

Programmes start at 7.00pm.

Documentary exploring the paradise of Thailand. In central Thailand's forests, plains and city streets, nature finds a way of living alongside people.

The papers of a recently deceased head of MI5 show that he was, at one stage, spying for Russia. Worse still, he was investigated and cleared by a committee headed by Sir Humphrey.

Sir Humphrey must stop Jim supporting a plan to move armed service jobs from the south to the north east to ease unemployment.

Revealing the heroic spies who helped contribute to victory in WWII.

Historical documentary about the Battle of Culloden in 1746. Contains some scenes which some viewers may find upsetting.

Peter Watkins recounts the making of his 1964 documentary Culloden. Contains some scenes which some viewers may find upsetting.

Exploring the landscapes that inspired Arthur Ransome to write Swallows and Amazons.