BBC Four HD SkyTV

Programmes start at 7.00pm. [HD]

Coverage of day 4 of the World Snooker Championship at the Crucible Theatre, Sheffield. [S] [HD]

2/2. Part two of a film exploring the freedom of speech conversations on US campuses. Contains strong language and scenes which some viewers may find disturbing. [S] [HD]

Nuclear physicist Jim Al-Khalili uncovers the story of the Sellafield nuclear facility. [S] [HD]

Horizon follows an international team of volcanologists in Iceland as they draw fascinating parallels between the volcanoes on Earth and those elsewhere in the solar system. [S] [HD]

Film exploring the extraordinary impact of escapologist Harry Houdini in the early 20th century. Featuring restored archive footage and interviews with historians and illusionists. [S]

Nuclear physicist Jim Al-Khalili uncovers the story of the Sellafield nuclear facility. [S,SL] [HD]

Programmes start at 7.00pm. [HD]

Programmes start at 7.00pm. [HD]

Coverage of day 5 of the World Snooker Championship at the Crucible Theatre, Sheffield. [S] [HD]

11/11. Tensions mount as jealousy, lust and shame combine to test the five flatmates. Contains some strong language and some scenes of a sexual nature. [S]

The life of the most glamorous plane ever built, as told by the people whose lives she touched. Narrated by Sophie Okonedo. [S] [HD]

3/3. A look at how an international team of scientists is trying to change people's perceptions of sharks. However, their breakthroughs come at a time when many sharks face extinction. [S,AD] [HD]

Horizon follows an international team of volcanologists in Iceland as they draw fascinating parallels between the volcanoes on Earth and those elsewhere in the solar system. [S] [HD]

The life of the most glamorous plane ever built, as told by the people whose lives she touched. Narrated by Sophie Okonedo. [S,SL] [HD]

Programmes start at 7.00pm. [HD]

Programmes start at 7.00pm. [HD]

Coverage of day 6 of the World Snooker Championship at the Crucible Theatre, Sheffield. [S] [HD]

A puritan police sergeant arrives on a Scottish island in search of a missing girl, who the Pagan locals claim never existed. Contains some sexual content and disturbing scenes. [1973] [S,AD]

Documentary about cult British horror film The Wicker Man. Featuring actors Christopher Lee, Edward Woodward and Ingrid Pitt and director Robin Hardy. Deals with adult themes. [S]