Complex sentence: It may not be legally possible to give consent to certain activities in certain jurisdictions; see the Operation Spanner case for an example of this in the UK which involved sadomasochistic activities such as branding.
Split into simpler sentences: It may not be legally possible to give consent to certain activities in certain jurisdictions. See the Operation Spanner case for an example of this in the UK that involved sadomasochistic activities such as branding.