There are many thousands of charities providing services to young people, aiming to ensure that no matter how vulnerable they are, or what risks and deprivations they face, they will have the chance to enjoy their childhoods and have a safe and happy future. How can O.R. help these organisations? Is there anything special about the nature of the analytical or decision-making support needed when the service users are young people? What can we learn from the experiences of O.R. interventions? This seminar will include a series of talks by O.R. professionals who are working pro-bono for charities supporting young people. The charities involved include The Childhood Trust, Elfrida Rathbone, and the Joseph Rowntree Foundation. The talks will be followed by a general discussion of special issues affecting young people.