Tonight it's the turn of Britain's finest young string players to stake their claim for a place in Sunday's grand final at London's Barbican Centre. The quintet hoping to impress an audience and judges are Emma Hancock, George Corbett, Litsa Tunnah , Jennifer Pike and Rowena Calvert. Presented by Stephanie Hughes, with Clare-Louise Stuart. Continues at 8.30pm.

With George Alagiah.

The climax of tonight's string semi-final.

Changeable. The penultimate instalment looks at how painters such as John Constable and Claude Monet have depicted uncertain weather.

1997 drama about a Pakistani cab driver, hoping to gain acceptance into mainstream British society, who gets involved with a prostitute, much to the dismay of his deeply religious son. Starring Om Puri and Rachel Griffiths, and directed by Udayan Prasad from a screenplay by Hanif Kureishi.

Veteran director Eric Rohmer 's bittersweet romantic drama from 1995, telling in a trio of vignettes the story of three encounters in the French capital - each of which has an unexpected twist. Starring Clara Bellar. In French with English subtitles.