- Detecting or exposing crime, or the threat of crime, or serious impropriety
- Protecting public health or safety
- Protecting the public from being misled by an action or statement of an individual or organisation
- Disclosing a person or organisation's failure or likely failure to comply with any obligation to which they are subject
- Disclosing a miscarriage of justice
- Raising or contributing to a matter of public debate, including serious cases of impropriety, unethical conduct or incompetence concerning the public
- Disclosing concealment, or likely concealment, of any of the above.
There is a public interest in freedom of expression itself.