Informers for the British authorities monitoring the radical Finsbury Park mosque in London identify a key extremist named Rabah Kadre. One of the informers, Reda Hassaine, mentions him in a number of reports and British authorities realise that he is an important figure in Islamist operations in Britain. In fact, Kadre is the second in command to radical leader Abu Doha, who heads a Europe-wide network of extremists. [O’Neill and McGrory, 2006, pp. 240]