Article 17 F1F2

Whenever, under an agreement between the United Kingdom and a third country, exports are not to be authorised unless an import authorisation has been issued by the competent authorities of that third country F3or the competent authorities of Northern Ireland for the substances in question, the competent authorities in F4Great Britain shall satisfy themselves as to the authenticity of such import authorisation, if necessary by requesting confirmation from the competent authority of the third country or the competent authorities of Northern Ireland.