BP shares appear set for their worst one-day fall since 2010 after a judge ruled the oil company had been negligent in events leading up to the 2010 Gulf of Mexico oil spill.
The company's shares were down by 6% at the close of trading in London - making it the worst performer on the FTSE 100.
The ruling could add billions of dollars in fines to the more than £25 billion the company has already been charged for the disaster.
More top news
Millions of people have observed a minute's silence in memory of the victims of the Tunisian terror attack.
The Duke and Duchess of Cambridge have submitted a planning application to have a new tennis court built at their Norfolk home.
Judge Mindy Glazer was not expecting to be reunited with "the nicest kid in middle school" when Arthur Booth appeared in her court.