A Jordanian doctor charged with participating in foiled car bomb plots in London and Glasgow made a brief court appearance Friday. Mohammed Jamil Asha, 26, who was charged with conspiracy to cause explosions, spoke only to confirm his identity and address during his appearance at City of Westminster Magistrates Court. His next appearance was set for July 27 at London's Central Criminal Court. Asha was the fourth person to be charged after two cars packed with gas cylinders and nails were found in central London on June 29. The next day, two men crashed a flaming Jeep Cherokee loaded with gas canisters and gasoline into security barriers at Glasgow airport's main terminal. First to be charged was Dr. Bilal Abdullah, allegedly a passenger in the Jeep. He was also charged with conspiring to set off explosions. Last week, police charged Indian doctor Sabeel Ahmed, 26, with withholding information that could prevent an act of terrorism. He was arrested in Liverpool on the day of the Glasgow attack. His brother, Kafeel Ahmed, is believed to have set himself ablaze after crashing into the airport and remains in a Scottish hospital with critical burns. Mohamed Haneef, 27, a distant cousin who once shared a house with the Ahmed brothers in Britain, has been charged by Australian police with supporting a terrorist group. In all, police detained eight people in the aftermath of the foiled attacks. Four have been charged, three released, and Kafeel Ahmed is under guard in hospital.