2012 saw the culmination of the epic legal battle between Russian billionaires Boris Berezovsky and Roman Abramovich. Suzanna Ring charts the dispute and interviews key advisers about their experiences in one of most dramatic civil cases in legal history

In 2009, a hacker known as ‘Igor’ managed to get hold of some highly sensitive documents that have gone on to play a crucial part in one of the most headline-grabbing disputes of recent times – Boris Berezovsky’s multi-billion dollar battle with business rival and Chelsea Football Club owner Roman Abramovich.