The proposed research aims to create empirical evidence regarding the impact of befriending services on health and loneliness, assisting ALONE in developing and refining their mission statement. The research question is: “Do befriending services improve health (measured as health-related quality of life and cognitive function), and do they mitigate the impact of loneliness on health?” A secondary aim is to identify, using exploratory methods, potential mechanisms through which befriending impacts health.