In 2007, a potential tragedy was averted in London when two car bombs were disabled before they could be detonated in a busy district of the city. The cars and devices were recovered intact for forensic examination and both were found to contain gasoline canisters, nails, and a mobile phone-based trigger. The next day, two men drove a car laden with propane into a terminal at Glasgow International Airport and set it ablaze. The surviving conspirator was jailed for both incidents. Who was he? Discuss