From Law wiki, the wiki for law research

The person who presides over acoroners court. Because of the role this court plays determing cause of death, coroners are often medical practitioners, with little legal training; this situation is likely to be changed by legislation proposed recently. The role of the coroner (still called the 'crowner' in some parts of the country) is an ancient one, and the coroner used to have extensive powers of investigation and prosecution. Apart from the determination of cause of death, the only other function routinely still exercised by coroners is the determination oftreasure trove, and even that is something that most coroners will never encounter.