The use of social prescribing interventions for common mental health issues is expanding as clinicians seek to diverge from the traditional medical model of treatment. This intervention allows for the referral of patients to a nonclinical social activity via a link worker. Evidence for the benefits of social prescribing is growing. Most evidence is based on adults; however, a smaller number of studies involving children and young people have produced encouraging results. This evaluation reports on data routinely collected by the Linking Leeds service between 9 January 2019–11 January 2020. Linking Leeds provides Social Prescribing for people aged 16 years and above; however, the current paper focuses on service users aged between 16 and 25. Their aim is to connect people to services and activities in their community in order to benefit overall health and mental wellbeing. This evaluation of the Linking Leeds program supports the growing body of evidence to support the benefits social prescribing can have on young people’s mental health. Two main mechanisms were identified which underpin social prescribing in young people: social connectedness and behavioural activation.