8The privileges and immunities conferred by this Schedule on the Commonwealth Secretariat, its officers and servants and members of their families may be waived by the Secretary-General or any person for the time being exercising his functions.
9If in any proceedings any question arises whether or not any person is entitled to any privilege or immunity under this Schedule, a certificate issued by or under the authority of the Secretary of State stating any fact relevant to that question shall be conclusive evidence of that fact.
10(1)In this Schedule—
" duties " includes taxes and related charges, other than charges for storage, cartage and similar services;
" income tax " includes surtax;
" senior officer ", in relation to the Commonwealth Secretariat, means an officer of the Secretariat recognised by the Secretary of State as being a senior officer of the Secretariat.
(2)Expressions used in this Schedule and in the Articles set out in Schedule 1 to the [1964 c. 81.] Diplomatic Privileges Act 1964 shall have the same meaning in this Schedule as they have in those Articles.
(3)References in this Schedule to the United Kingdom shall be construed as including references to the Channel Islands and the Isle of Man.