Correct. The UK legislation which defines what kind of infringement (or enablement thereof) constitutes a criminal offence [0] uses the language "In the course

Correct. The UK legislation which defines what kind of infringement (or enablement thereof) constitutes a criminal offence [0] uses the language "In the course of a business ... otherwise than in the course of a business to such an extent as to affect prejudicially the owner of the copyright." The second is a very high barrier. [0] https://www.gov.uk/government/publications/intellectual-property-offences/intellectual-property-offences https://www.gov.uk/government/publications/intellectual-prop...