An 18 year old man, arrested at the port of Dover, following the Parsons Green terror attack is due in court.
An improvised explosive device injured 30 people on an underground train during rush hour last month.
Ahmed Hassan, an Iraqi asylum seeker, of Cavendish Road in Sunbury has been accused of attempted murder and using the chemical compound TATP to cause an explosion that was likely to endanger life.
He allegedly bought parts to make the improvised explosive device online and left the District Line train at Putney Bridge before the device partially detonated at the next station on 15th September.
Witnesses described how a fireball erupted inside the carriage, leaving 30 people injured, including one woman with serious burns.
The teenager, whose parents are understood to have been killed in Iraq, was in the foster care of Penelope and Ronald Jones, aged 71 and 88 respectively, who previously received MBEs for services to children and families.
Hassan will make his first Crown Court appearance before senior judge Mr Justice Haddon-Cave via video link from custody.