I was curious about the application of Double Jeopardy around the world, and in particular the European Union, in the following scenario.
Someone commits a crime in England, the police arrest them. Rather than sending them to court, the offender receives a warning, caution, or similar outcome. The matter never goes to court.
Would the offender be protected against being punished again, for the same crime and facts, in another sovereign? I cannot think of a good example, so just assume it is a crime which another country can also claim jurisdiction over, for whatever reason.
Exclude countries that do not apply Double Jeopardy protections when someone has already served a sentence in another sovereign, such as the United States of America.