Article 9
The following immunities and privileges conferred on representatives shall be extended to their official clerical staff referred to in Articles 7(2) and 8(3)(b) of this Order, while they are present in the United Kingdom for the discharge of their duties:—
(a)
In respect of words spoken or written and of acts done by them in their official capacity, immunity from legal process, and inviolability for all papers and documents;
(b)
Where the incidence of any form of taxation depends upon residence, any period during which they are present in the United Kingdom for the discharge of their duties shall, for the purpose of determining their liability to taxation, be treated as not being a period of residence in the United Kingdom.