Lee Rigby was the victim of one of the most savage offences ever prosecuted, the Crown Prosecution Service said.
Sue Hemming, Head of Special Crime and Counter Terrorism at the CPS, said: “The murder of Fusilier Rigby was brutal and its perpetrators carried out one of the most savage offences ever prosecuted by our counter terrorism lawyers.
“As a soldier, this young father had dedicated his life to keeping people safe, including from the threat of terrorism. That dedication to his country cost him his life and was in stark contrast to the appalling conduct and extremist views of the men who murdered him.
“We recognise that this trial has been exceptionally difficult for Lee Rigby’s family but I hope they can take some limited comfort from the justice achieved today and the fact that both defendants now face a very long stay in prison.”