Childline is available to anyone under the age of 19. They offer a counselling service to young people and it is confidential and free.
Young Minds offer help for young people's mental health. They can offer support and information on how to manage mental health.
CAMHS stands for Children and Adolescent Mental Health Services. Below is a link explaining the work they do and how you can be referred. It is an organization run by the NHS.
Papyrus is company working to prevent young suicide, working with children and adults up the age of 35.
Kooth is an online counselling service that provides young people from the ages of 11 to 25 emotional support.