Sue Hemming, head of special crime and counter terrorism at the Crown Prosecution Service, said:
Michael Adebolajo and Michael Adebowale revelled in one of the most appalling terrorist murders I have seen whilst head of counter terrorism at the CPS.
Not only was the attack brutal and calculated, it was also designed to advance extremist views.
As a solider, Fusilier Lee Rigby was targeted in a clear act of revenge, deliberately carried out in full view of members of the public for maximum impact.
Under the law, terrorism is committed by a defined act designed to influence a Government, the public or an NGO for the purpose of advancing a religious, political, ideological or racial cause.
This attack was always going to fail in that purpose as it served only to bring people together in shock, sympathy and solidarity.
In December, the two defendants were convicted of a savage murder.
Following strong argument from the prosecution, they have today been sentenced for carrying out that murder during an act of terrorism.
I know the court process has been particularly distressing for Lee Rigby’s family.
I hope they can take some small comfort from the sentences imposed today and can begin to move on.
More top news
Close to a frost in places tonight
Mali has been awarded the PDSA's Dickin Medal for his courage under attack, saving the lives of dozens of British soldiers.
The 49-year-old man from Swanage has been released under investigation, as Gaia's family said they were 'holding on to hope'.