asked Her Majesty's Government:
Whether they propose to accede to requests from the Government of the United States for the extradition of British subjects alleged to have infringed United States laws prohibiting online gambling; and whether they have received any such requests to date. [HL3894]
For any extradition request made by the US to the UK (and vice versa) to succeed, the “dual criminality” test must be satisfied. This means that the conduct for which a person's extradition is sought must be an offence in both the requesting and requested states, punishable by a term of at least 12 months' detention in both territories. Online gambling is not an offence in the UK.
As a matter of policy and practice, the Home Office will neither confirm nor deny the existence of any extradition request ahead of an arrest.