This Practice Note considers previous convictions, including what is meant by a spent conviction, when convictions will not become spent, rehabilitation periods and the categorisation of other means of disposal including absolute discharges, conditional cautions and fixed penalty notices etc, for criminal records purposes. It also considers, for organisations, disposals such as non prosecution or deferred prosecution agreements (DPAs). In addition, it explains how previous convictions or cautions (an offender’s criminal record) might impact upon new criminal investigations (including via searches using the Police National Computer (PNC)) and decisions to prosecute. This includes decisions to offer DPAs where corporate recidivism is concerned, requirements to disclose previous convictions in criminal or quasi criminal matters, for example when complying with a duty of candour to the court, bail applications, good and bad character assessments and sentencing. It also considers proof of previous convictions as an element of the offence.