The Serious Fraud Office (SFO) receives a range of information and intelligence about alleged criminal actions from diverse sources. Decisions to investigate are made on the basis of all relevant <?notus-xml column=679?> material. It is not always possible or appropriate to suggest that a particular case was triggered by a single report. Further, given the small number and seriousness of cases investigated by SFO, it would not be desirable to provide further breakdown of this data because of the need to protect individuals and the risk of prejudicing investigations.