This is an in-depth and contextual study of judicial approaches to the exclusion of confessional and non-confessional evidence. It differs from standard titles on evidence by evaluating the exclusionary discretion from the perspective of criminal justice values and by considering the role of the judiciary within the criminal justice system. A major theme is the extent to which judicial decision-making still reflects pre-PACE orthodoxies and how far PACE has effected a sea change in judicial attitudes towards the exclusion of evidence.