21. Grave breaches of the conventions and Protocol I.

Any person, whatever his nationality, who, whether in or outside the United Kingdom1, commits or aids, abets or procures the commission by any other person of a grave breach of any of the Geneva Red Cross Conventions, Protocol I or Protocol III2 is guilty of an offence3.

Grave breaches of the Geneva Red Cross Conventions are those involving any of the following acts, if committed against persons or property protected by the relevant convention: wilful killing, torture or inhuman treatment, including biological experiments, wilfully causing great suffering or serious injury to body or health4, extensive destruction and appropriation of property