Two doctors have denied plotting to explode car bombs in London and Glasgow.
Iraqi Bilal Abdullah and Jordanian Mohammed Asha say they are innocent of charges of conspiring to murder and to cause explosions.
Police arrested 28-year-old Abdullah and 27-year-old Asha after a botched attempt by a third person to drive a burning Jeep into Glasgow Airport on June 30.
The driver was engulfed in flames and later died. Abdullah was arrested at the scene and police say he was a passenger. Asha was detained the next day.
The two suspects appeared by video link from prison for Friday's pretrial hearing at London's Central Criminal Court. Their trial is due to start in October.
Police found two cars packed with explosives in London the day before the Glasgow incident.