The Act created a new offence for publishing obscene material, repealing the common law offence of obscene libel which was previously used, and also allows Justices of the Peace to issue warrants allowing the police to seize such materials. At the same time it creates two defences; firstly, the defence of innocent dissemination, and secondly the defence of public good. The Act has been used in several high-profile cases, such as the trials of Penguin Books for publishing "Lady Chatterley's Lover" and "Oz" for the "Schoolkids OZ" issue.