Four British men have pleaded guilty to taking part in a plot to blow up the London Stock Exchange in December 2010.<br /><br />They are among nine people who were on trial over the al-Qaeda inspired plans.<br /><br />The group also conspired to send mail bombs to other several high profile targets in London.<br /><br />Police say it foiled the plot at an early stage before dates were set for the attacks.<br /><br />Al Jazeera's Tania Page reports from London.
