In very simple terms, professional indemnity covers you for mistakes or allegations that you’ve made a mistake. Compensation to your client (or a third-party) in circumstances where you are liable due to professional negligence (plus any associated defence or legal costs are normally covered in addition).
A basic professional indemnity product will only protect you against allegations of negligence. There are, however, professional indemnity policies that cover a lot more, such as the policies we provide for our production companies. Matters such as breach of intellectual property including copyright infringement, breach of confidentiality and breach of confidence are often covered under more comprehensive professional indemnity policies.