16. Except in so far as in any particular case any privilege or immunity is waived by the Secretary-General, officers of the United Nations (other than those who are locally recruited and assigned to hourly rates of pay) shall enjoy:—
(a)immunity from suit and legal process in respect of things done or omitted to be done by them in their official capacity;
(b)exemption from income tax in respect of emoluments received by them as officers of the United Nations; and
(c)the like exemption from customs duties and taxes on the importation of articles which—
(i)at or about the time when they first enter the United Kingdom to take up their posts as officers of the United Nations are imported for their personal use or that of members of their families forming part of their household, including articles intended for their establishment, and
(ii)are articles which were in their ownership or possession or that of such members of their families, or which they or such members of their families were under contract to purchase, immediately before they so entered the United Kingdom,
as in accordance with paragraph 1 of Article 36 of the 1961 Convention Articles is accorded to a diplomatic agent.