In the study of sentencing disparities, class related hypotheses have received considerably less attention than explanations based on offenders’ ethnicity. This is unfortunate since the two mechanisms are likely interrelated, at the very least as a result of their overlap in the population, with ethnic minorities being generally more deprived than the White majority. In this registered report we propose exploring the mediating and moderating effects between offenders’ area deprivation and their ethnic background using a novel administrative dataset capturing all offences processed through the England and Wales Crown Court. Specifically, we seek to test two key hypotheses: i) the reported ethnic disparities in sentencing are mediated and explained away by area deprivation; and ii) ethnic disparities are moderated by area deprivation, with ethnic disparities being narrower in the more deprived areas. Results from this empirical analysis will shed new light on the underlying causes of sentencing disparities, but crucially - if deprivation is shown to play a major role in the generation of ethnic disparities - they will also help inform the adequate policy responses to redress this problem.