young person 
noun Law
(In the UK) a person generally from 14 to 17 years of age.It can be inferred that the primary venue for trial of the young person should be the Youth Court....
- Parliament has seen fit to arrange a special regime for children and young persons when giving evidence; namely, by using video link.
- Those who are mentally disordered, young persons on remand, and those who are serving very long sentences are thought to be particularly vulnerable.