3.—(1) In this entry the double confirmation condition means that—N.I.
(a)the relevant diplomatic head, or a person acting on their authority, (H) confirms in writing to the Foreign, Commonwealth and Development Office that P is required to undertake work in the United Kingdom which is essential to—
(i)the functioning of the diplomatic office served by relevant diplomatic head, or
(ii)the foreign country, foreign territory or British overseas territory represented by the relevant diplomatic head,
(b)H has confirmed in writing to the Foreign, Commonwealth and Development Office that
(i)P is not required to comply with regulation 4,
(ii)P is not required to comply with regulation 6,
(iii)P is not required to comply with regulation 8,
(iv)P's work cannot be undertaken whilst P is complying with regulation 10, or
(v)P is not required to comply with regulation 14 and Schedule 7
(as the case may be),
(c)the Foreign, Commonwealth and Diplomatic Office has then confirmed in writing to H that—
(i)it has received the confirmations set out above,
(ii)P is travelling to the United Kingdom to conduct official business with the United Kingdom, and
(d)the Foreign, Commonwealth and Diplomatic Office has then confirmed in writing to H that—
(i)P is not required to comply with regulation 4,
(ii)P is not required to comply with regulation 6,
(iii)P is not required to comply with regulation 8,
(iv)P is not required to comply with regulation 10, or
(v)P is not required to comply with regulation 14 and Schedule 7
(as the case may be).
(2) In this paragraph “the relevant diplomatic head” means the head of the mission, consular post, international organisation, conference, office representing a foreign territory in the United Kingdom, or a Governor of a British overseas territory (as the case may be).