Mr. Hugh Hume:

They might be something where there is no complainant, for example. It might be something we have been made aware of, such as through social media. In theory, we might see an incident that is of significant public interest and that we feel warrants investigation, or it might be something that comes into us as part of a complaint and, although the individual is not complaining about it, when we identify it, we feel it is something where we would wish to open an investigation.