Mr Love, who also suffers from depression and eczema, has said that a jail term in the US could cause his health to deteriorate and would lead to a mental breakdown or suicide.

It is alleged that between October 2012 and October 2013, Mr Love placed hidden "shells" or "backdoors" within the networks he compromised, allowing them to return and steal confidential data.

He is accused of causing "millions of dollars" worth of damage.

Mr Love is expected to appeal against the decision.

Responding to the announcement, the Rev Alexander Love, Mr Love's father, told the Press Association: "It was going to happen - it was inevitable - but it's still painful. I cannot begin to express how much sorrow it causes me."

He added: "All we are asking for is British justice for a British citizen."

Barry Sheerman, one of the more than 100 MPs who have signed a letter calling on US President Barack Obama to block Mr Love's extradition, said he was "deeply disappointed" at the decision.

The Labour MP for Huddersfield said: "We are still keeping up the pressure. We are getting more and more MPs to sign the letter to President Obama."

He said he is "deeply disappointed" at the decision, adding: "The pressure continues, we won't give up."