Home secretary Sajid Javid has signed a request for Julian Assange to be extradited to the United States over computer hacking accusations.
The WikiLeaks founder is due to appear via video link before Westminster Magistrates' Court on Friday for a case management hearing, after the US requested his extradition.
Mr Javid said he signed the order on Wednesday, but that the final decision now rests with the courts.
"I want to see justice done at all times and we've got a legitimate extradition request so I've signed it but the final decision is now with the courts," he said.
"I am very pleased that the police were finally able to apprehend him and now he's rightly behind bars because he broke UK law."
Assange is serving a 50-week prison sentence after being dragged out of the Ecuadorian embassy in April and jailed for a bail violation.
And an investigation has been reopened into an allegation of rape in Sweden, which Assange has always denied.
A Home Office spokesman said: "Mr Assange was arrested in relation to a provisional extradition request from the United States of America.
"He is accused of offences including computer misuse and the unauthorised disclosure of national defence information.
"We have received the full extradition request, which has been certified by the home secretary.
"This case is now before the courts and it would be inappropriate to comment further."