Article 11
Representatives to the Assembly of the Organisation shall have, in respect of words spoken or votes cast by them in the exercise of their functions, the like immunity from arrest and all legal proceedings as is accorded to an envoy of a foreign sovereign Power accredited to Her Majesty.
Except in so far as in any particular case any privilege or immunity is waived by the Assembly, representatives to the Assembly shall enjoy in the United Kingdom, during the period of the sessions of the Assembly, while attending meetings of Committees or Sub-Committees of the Assembly whether or not that Assembly is itself in session, and during their journeys to and from the place of meeting of that Assembly or of such Committees or Sub-Committees:—
If they are representatives of the United Kingdom, the same immunity from arrest or legal process as Members of Parliament enjoy under the law and custom of the United Kingdom;
If they are representatives of members of the Organisation other than the United Kingdom, the like immunity from arrest and prosecution as is accorded to an envoy of a foreign sovereign Power accredited to Her Majesty.
Provided that representatives to the Assembly shall not enjoy any immunity or privilege under this paragraph in cases where they are found committing, attempting to commit or just having committed a criminal offence.
Part IV of the Schedule to the Act shall not operate so as to confer any immunity or privilege on members of the official staff of representatives to whom this Article applies, other than substitute representatives.