Indecency describes conduct, images or communications that offend prevailing standards of sexual propriety, without necessarily amounting to obscenity or explicit sexual activity. It is a contextual concept, assessed objectively by reference to contemporary community standards, the audience, and the circumstances of publication or behaviour.In England and Wales and Northern Ireland, “indecent” appears in numerous statutes and common law offences, including historic indecent assault, indecent exposure, indecent images of children, and offences concerning indecent displays or publications. The term is not usually exhaustively defined in legislation; courts interpret it case by case.In Scotland, indecency underpins common law and statutory sexual offences (for example, shameless indecency historically, and offences involving indecent communications or display), again determined by judicial assessment of what is objectively indecent.In Ireland, the concept similarly features in offences relating to indecent assault (now largely replaced by specific sexual offences), indecent images and indecent display or publication, with meaning developed through case law.Across all four jurisdictions, indecency is significant in criminal liability, regulation of sexual expression and content, and professional discipline where sexually inappropriate conduct is alleged.