The BFI deserve much credit for finding, restoring and reissuing the feature films of the writer/director Jane Arden and her collaborator the producer/director Jack Bond. Feature length experimental films are rare but the Arden/Bond team risked this format three times. The first, 'Separation'(1967) ignores the conventions of narrative cinema and is driven by the events, memories and dreams of a woman - played by Arden herself - whose marriage is falling apart. Whilst it is certain to infuriate some viewers, for others it will be an absorbing experience. Arden and Bond seem to have been very much aware of the French New Wave, particularly Resnais and Godard, and the groundbreaking improvisations of John Cassavetes. Despite these influences 'Separation' is an original, thought-provoking film with the huge benefit of a strong cast, notably the enigmatic Ann Lynn and, playing the husband/psychiatrist figure, the great David de Keyser.