A man admitted withholding information about a failed suicide car bomb attack on Glasgow Airport.
Sabeel Ahmed, 26, pleaded guilty at the Old Bailey to failing to tell police information about the terrorist attack.
The trained doctor is the brother of Kafeel Ahmed, who was the driver of a burning Jeep Cherokee that was driven into the terminal building. He died later.
The doctor was arrested near Liverpool's Lime Street station on June 30 last year and was later charged under the Terrorism Act.
Ahmed, originally from Bangalore in India, but then living in Ramilies Road, Liverpool, was the third person charged in the investigation.
Two other men face a trial later this year accused of conspiracy to cause explosions.
On June 29 last year two cars containing petrol, gas cylinders and mobile phone detonators were discovered in central London.
The next day the burning car was driven into the main terminal building at Glasgow Airport.
Prosecutor Jonathan Laidlaw told the court that the airport attack was intended to be a suicide mission after the earlier attacks failed.
The attack caused panic within the terminal and a number of people suffered minor injuries in the "crushing" that followed.
