The document summarizes the Whatton Circles project, the first prison-based Circles of Support and Accountability (CoSA) in the UK. The Safer Living Foundation established Whatton Circles to provide social support to prisoners leaving HMP Whatton who are at high risk of reoffending due to intellectual disabilities, older age, or lack of family/community ties. Whatton Circles aims to start circles for 4 prisoners per year over 3 years. The research evaluates the impact of circles on reducing reoffending and improving well-being, by comparing circle members to a control group and conducting interviews. The research aims to provide evidence on the effectiveness of CoSA and inform practice internationally.