Compounding a crime refers to an unlawful agreement whereby a person who has suffered, or claims to have suffered, from a criminal offence accepts a benefit, or agrees to accept a benefit, in return for not reporting the offence, not supporting a prosecution, or otherwise obstructing justice. It is closely linked to perverting (or attempting to pervert) the course of justice and offences relating to witness interference.Across England and Wales, Scotland, Northern Ireland and Ireland, it is generally an offence to take money or other consideration to refrain from prosecuting, or to conceal a crime, save where compromise is expressly authorised by statute (for example, in relation to certain statutory fixed penalties or private prosecutions discontinued for proper reasons).The concept appears in both legislation and case law, and may overlap with statutory offences such as assisting offenders, misprision of felony (historically), or obstruction of justice. In practice, it arises in criminal law, regulatory investigations, and professional discipline, particularly where victims, witnesses or lawyers are alleged to have entered into improper settlements or non‑disclosure arrangements that frustrate criminal proceedings.