Related Rule
United Kingdom of Great Britain and Northern Ireland
Practice Relating to Rule 161. International Cooperation in Criminal Proceedings
Section C. Extradition of own nationals
In 2003, in a written ministerial statement in the House of Commons, the UK Secretary of State for the Home Office stated regarding a new bilateral extradition treaty between the United Kingdom of Great Britain and Northern Ireland and the United States of America:
The new treaty also maintains the present position that political motivation cannot be used to block extradition in the case of terrorist or other violent crimes. The treaty stipulates that neither nationality nor statutes of limitations will be a bar to extradition. 
United Kingdom, House of Commons, Written ministerial statement by the Secretary of State for the Home Office, Hansard, 31 March 2003, Vol. 402, Written Ministerial Statements, cols. 41WS–42WS.