Russian film 'Khodorkovsky' to be released in London

The fate of Mikhail Khodorkovsky, once Russia's richest man, now in jail accused of tax evasion, is not likely to feature high in Vladimir Putin's electoral campaign.

The two men are said to be sworn enemies.

As Russians go to the polls this weekend to chose which candidate - Vladimir Putin, Sergei Mironov, Vladimir Zhirinovsky, Gennady Zyuganov or Mikhail Prokhorov - will be their next president, a new documentary film 'Khodorkovsky' opens in London.

The film's director, Cyril Tuschi, explains why he thought was important to bring Khodorkovsky's story to the big screen.

BBC Russia's Alexander Kan reports.