15.—(1) Except in so far as in any particular case any privilege or immunity is waived in the case of the Secretary-General by the Security Council and in the case of an Assistant Secretary-General by the Secretary-General, and subject to the provisions of paragraph (2) of this Article, the Secretary-General of the United Nations and any Assistant Secretary-General shall enjoy:—
(a)the like immunity from suit and legal process, the like inviolability of residence and the like exemption or relief from taxes, other than customs duties and taxes on the importation of goods, and rates as are accorded to or in respect of the head of a diplomatic mission;
(b)the like exemption from customs duties and taxes on the importation of articles imported for his personal use or the use of members of his family forming part of his household, including articles intended for his establishment, as in accordance with paragraph 1 of Article 36 of the 1961 Convention Articles is accorded to a diplomatic agent;
(c)the like exemption and privileges in respect of his personal baggage as in accordance with paragraph 2 of Article 36 of the 1961 Convention Articles are accorded to a diplomatic agent;
(d)relief, under arrangements made by the Commissioners of Customs and Excise, by way of refund of customs duty paid on any hydrocarbon oil (within the meaning of the Hydrocarbon Oil (Customs & Excise) Act 1971) which is bought in the United Kingdom by him or on his behalf, such relief to be subject to compliance with such conditions as may be imposed in accordance with the arrangements; and
(e)exemptions whereby, for the purposes of the enactments relating to national insurance and social security, including enactments in force in Northern Ireland,—
(i)services rendered for the United Nations by the officer shall be deemed to be excepted from any class of employment in respect of which contributions or premiums under those enactments are payable, but
(ii)no person shall be rendered liable to pay any contribution or premium which he would not be required to pay if those services were not deemed to be so excepted;
“exemptions whereby for the purposes of the National Insurance Acts 1965 to 1973, the National Insurance (Industrial Injuries) Acts 1965 to 1973, any enactment for the time being in force amending any of those Acts, and any enactment of the Parliament of Northern Ireland corresponding to any of those Acts or to any enactment amending any of those Acts,—
(i)services rendered for the United Nations by the officer shall be deemed to be excepted from any class of employment which is insurable employment, or in respect of which contributions are required to be paid, but
(ii)no person shall be rendered liable to pay any contribution which he would not be required to pay if those services were not deemed to be so excepted.”.
(2) This Article shall not apply to any person who is a citizen of the United Kingdom and Colonies or a permanent resident of the United Kingdom.
(3) Part IV of Schedule 1 to the Act shall not operate so as to confer any privilege or immunity on any member of the family of the Secretary-General or any Assistant Secretary-General other than his spouse and minor children.