"Iain Connor, who works for Pinsent Masons, the law firm behind OUT-LAW, said that provisions within the UK's Extradition Act would give the legal means for suspected criminals to be summoned to the US.

The UK-US extradition treaty agreement allows either country to surrender a criminal suspect to the other if the crime carries a minimum punishment of a year's prison sentence.

"US companies are likely to try and secure a conviction in the US where they know that they could succeed on the basis of an offence of 'authorising copyright infringement' which in the UK is not a well defined offence," Connor said."

— http://www.out-law.com/page-12056