The UK Government places ever-greater weight on performance assessment of local public bodies through comprehensive performance assessments (CPA). However, the CPA assessment framework has been criticised for its disregard of local factors that are beyond the control of local authorities but that affect their performance. In this article, the assessment framework is described and three different studies are appraised that have investigated the link between deprivation, as one of these external constraints, and CPA performance. Suggestions are developed as to how the analysis can be improved, by extending the choice of dependent variables and explanatory variables so as to be able to use panel data as the investigative method.