Three Muslim men accused of plotting suicide attacks on trans-Atlantic flights have pleaded guilty to conspiring to cause explosions.
The pleas came as their trial at the Woolwich Crown Court in London was drawing to a close.
The trio and two other defendants also pleaded guilty to conspiring to cause public nuisance by publishing videos threatening suicide bomb attacks.
They and three others are also charged with conspiring to mass murder by smuggling home-made liquid bombs on to passenger jets.
All eight accused deny two charges of conspiracy to murder.
The plot was uncovered in August 2006.
The trial began six weeks ago and is expected to conclude next week.
It is the latest in a series of terrorism trials since bombings on the London transport system in July 2005 that killed 52 people.