This study investigates the relationship between social participation and health outcomes between caregivers and noncaregivers in Great Britain. Previous studies indicate that the impact of informal caregiving on the carer's health is complex, and the intensity of care provision has an adverse impact on the caregivers' health, while social participation could have a protective role in this respect. Using qualitative and quantitative data from Wave 8 of the 1958 National Child Development Study, the analysis shows that social participation has a positive effect on the carers' mental health and subjective well-being. Individuals who did not engage in social participation reported lower levels of mental health and control, autonomy, self-realization and pleasure (CASP) scores than those engaged in social participation. The qualitative results showed the barriers to social participation of caregivers to be time, energy, and finance. We discuss ways in which the government could address such barriers to improve the level of social participation among caregivers.