No, 19. Unilcd Kindom (iGovernment Mission 1967 immunitiess and Privileges). (b) A diplomatic agent is not obliged to give evidence as a witness. (c) No measures of execution may be taken in respect of a diplomatic agent except in the cases coming under heads (i), (ii) and (iii) of sub-paragraph (a) of this pa agraph, and provided that the measures concerned can be taken without infringing the inviolability of his person or of his residence. (d) The immunity of a diplomatic agent from the juris- diction of St. Vincent does ut exempt him from thi.' jurisdiction of the Uniited Kingdom. 10.--(a) The inununity fromi jurisdiction of diplomatic agents and of persons enjoying inmimnity under paragraph 15 may be waived by the Government of the United Kingdom. (b: The waiver must always be express. (c) The initiation of proceedings, by a dipj nimatic agenl or by a person enjoying immunity from juris iijet ion under paragraph 15 shall preclude him from invoking immunity from jurisdiction in respect of any counter-cUMi directly connected with the principal claim. (d) Waiver of immunity from jurisdiction in respect of civil or administrative proceedings shall not be hlid to imply waiver or immunity in re Pect of the execution of the juig- ment, for which a separate waiver shall be necessary. 11.-(a) subject to the provisions of sub-paragraph (c) of this paragraph a diplomatic agent shall with respect to ser- vices rendered for the United Kingdom be exempt from social security provisions which may be in force in St. Vincent. (b) The exemption provided for in sub-paragraph (a) of this paragraph shall also apply to private servants who are in the sole employ of a diplomatic agent, on condition: (i) that they are not periinm gently resident in St. Vincent; and (ii) that they are covered by the social security pro- visions which may be in force in the United Kingdom or another country.