17.—(1) Except in so far as in any particular case any privilege or immunity is waived by the Executive Director of the Organisation, experts (other than officers of the Organisation) serving on any committee of the Organisation or employed on missions on its behalf shall, so far as is necessary for the carrying out of their functions, including during journeys made in carrying out their functions and in the course of such missions, enjoy:—
(a)immunity from suit and legal process in respect of words spoken or written and all acts done or omitted to be done by them in the exercise of their functions, except in the case of a motor traffic offence committed by an expert or in the case of damage caused by a motor vehicle belonging to or driven by him;
(b)while they are employed by the Organisation, the like inviolability for all their official papers and documents as is accorded to the head of a diplomatic mission;
(c)while carrying out their functions and during their journeys made in carrying out their functions and in the course of such missions, the like exemptions and privileges in respect of their personal baggage as in accordance with Article 36 of the 1961 Convention Articles are accorded to a diplomatic agent, provided that the provisions of this sub-paragraph shall not apply to any person who is a citizen of the United Kingdom and Colonies or a permanent resident of the United Kingdom.
(2) Part IV of Schedule 1 to the Act shall not operate so as to confer any privilege or immunity on the official staff or on families of experts to whom the provisions of paragraph (1) of this Article apply.