Artist David Hockney discusses his theory that artists were secretly using optical devices such as mirrors and lenses in creating their work as early as the 15th century.
The English novelist, John Le Carré discusses his life as a secret agent and writer in this documentary about spies in fact and fiction, produced for British television.
An exploration of TS Eliot's The Waste Land, in its centenary year, that for the first time uncovers the personal story behind Eliot's creation of his celebrated poem.
