If a double-jeopardy issue is raised, evidence will be placed before the court, which will typically rule as a preliminary matter whether the plea is substantiated; if it is, the projected trial will be prevented from proceeding. In some countries certain exemptions are permitted, such as in the United Kingdom, where in Scotland a new trial can be initiated if, for example, the acquitted has made a credible admission of guilt. Part of English law for over 800 years, it was partially abolished in England, Wales and Northern Ireland by the Criminal Justice Act 2003 where, following demand for change, serious offences may be re-tried following an acquittal if new and compelling evidence is found and for the trial to be in the public's interest. In some countries, including Canada, Mexico, and the United States, the guarantee against being "twice put in jeopardy" is a constitutional right. In other countries, the protection is afforded by statute.