Islamist cleric Abu Hamza al-Masri is on his way to the United States after losing an eight-year legal battle to remain in the UK.
The Egyptian-born 54-year-old will face a number of terrorist related charges in the U.S.
Judges in the High Court in London had earlier ruled the radical preacher and four other suspects could be extradited to the United States.
US State Department spokesman Mark Toner said: “This ends a period of a lengthy litigation through the UK courts as well as to the courts of the European human rights and also speaks to the strength of the law enforcement relationship between the United States and the United Kingdom.”
Supporters gathered outside the court to protest. Friday’s decision ends a long legal battle.
The cleric who was jailed in Britain for seven years has been fighting extradition since 2004. He had launched this fresh appeal in the High Court after the European Court of Human Rights rejected an earlier bid to avoid being extradited.
Tensions boiled over with demonstrators clashing with police. The Home Office issued a statement after the ruling saying extradition would happen as, “quickly as possible”.