(1) The cases specified in paragraphs (2) and (3) are prescribed for the purposes of section 801(2) (cases where the overseas company receives a dividend from a related third company and in respect of which relief allowable for underlying tax is subject to a restriction under section 799(1)(b)).
(2) The case specified in this paragraph is that the overseas company is a dual resident company as respects an accounting period, and although resident in the same territory as the third company—
(a) it is treated for the purposes of Chapter IV of Part XVII of the Act (tax avoidance: controlled foreign companies) as resident in a different territory; or
(b) it would be so treated in accordance with paragraphs (a) to (c) of subsection (3) of section 749 (residence of controlled foreign companies) if that subsection applied to it.
(3) The case specified in this paragraph is that the third company is a dual resident company as respects an accounting period and although resident in the same territory as the overseas company—
(a) it is treated for the purposes of Chapter IV of Part XVII of the Act as resident in a different territory; or
(b) it would be so treated in accordance with paragraphs (a) to (c) of subsection (3) of section 749 if that subsection applied to it.