Knightley can also be seen this week in the film Never Let Me Go, based on Kazuo Ishiguro's novel.

BBC: Keira Knightley 'wins spurs' with West End stage return

Riseborough, 31, who has had roles in Shadow Dancer, Never Let Me Go, Brighton Rock and Happy Go Lucky, recently finished filming with Tom Cruise in sci-fi thriller Oblivion, set for release in April.

BBC: Actresses lead Bafta rising star nominees

Gareth Edwards' sci-fi film Monsters has six nominations as do Never Let Me Go, an adaptation of Kazuo Ishiguro's 2005 novel, and The Arbor, a documentary about the life of troubled Bradford playwright Andrea Dunbar.

BBC: Helena Bonham Carter and Liam Neeson to be honoured

Are you saying, as she contemplated her doom she never once said 'let me go'?

BBC: Lynda Spence trial: Ex-accused 'did not see murder'

As with other crises the key is often never let a crisis go to waste, and it seems to me that Russia is thinking about why it suffered so much.

FORBES: A View From St. Petersburg: Russia Rebounds From Oil Collapse