David Cameron expressed his joy at Abu Hamza's extradition.
The Prime Minister said the Government must consider ways of stopping similar cases reoccurring:
I'm absolutely delighted that Abu Hamza is now out of this country.Like the rest of the public I'm sick to the back teeth of people who come here, threaten our country, who stay at vast expense to the taxpayer and we can't get rid of them.
I'm delighted on this occasion we've managed to send this person off to a country where he will face justice.
Now we should learn every lesson.How do we stop these people coming in? How do we get rid of them more quickly? How do we make sure they don't spend so long at taxpayers' expense?
I'm as frustrated as the rest of the country when these things happen.
I'm delighted that this man at least is on an airplane and on his way to face justice.
Home Secretary Theresa May said the Government were looking at ways to shorten the extradition process, after radical cleric Abu Hamza and four other suspects were flown to the US to face terror charges following a long legal battle.
Radical cleric Abu Hamza has arrived in the US after being flown overnight after he lost his appeal against extradition.
A US District Court hearing has been scheduled for terror suspects Baba Ahmad and Syed Talha Ahsan in Connecticut today, according to officials.
The two men are reportedly heading to the state, where an internet service provider was allegedly used to host one of the websites, aboard one of the planes.
Hamza and the other two suspects are on the other aircraft destined for New York, according to the BBC.
Radical cleric Abu Hamza has left British soil and is en route to the United States with four other terror suspects after being deported from the UK, Home Secretary Theresa May has said today.
ITV News understands the plane extraditing radical Islamist cleric Abu Hamza and four other terror suspects to America has just taken off.
Terror suspect Abu Hamza has arrived at RAF Mildenhall. He will board a fighter plane and fly to the USA before midnight.
Terror suspect Abu Hamza is travelling towards RAF Mildenhall, where he will board a fighter plane headed for the USA.
Also on board the plane will be Adel Abdul Bary, Khalid al-Fawwaz, Babar Ahmad, and Syed Talha Ahsan, who all had their last-ditch attempts to fight extradition rejected by the High Court in London earlier today.
ITV News understands the plane will leave the UK before midnight
ITV News understands that terror suspects Abu Hamza, Adel Abdul Bary, Khalid al-Fawwaz, Babar Ahmad, and Syed Talha Ahsan have left HMP Long Lartin and have started their journey to the USA were they face a number of terror charges.