6(1)In any case where—
(a)on a claim for relief under paragraph 3 above, the whole or any part of any sum has been allowed as a deduction on a disposal of shares in any company; and
(b)that sum forms part of the gross attributed tax in relation to a dividend paid by that company; and
(c)a person receiving the dividend in respect of the shares referred to in paragraph (a) above (“the primary dividend”) or any other relevant dividend is, by virtue of paragraph 4(2) above, entitled under Part XVIII to relief (by way of underlying tax) by reference to the whole or any part of the gross attributed tax;
the amount which, apart from this paragraph, would be available by way of any such relief to the person referred to in paragraph (c) above shall be reduced or, as the case may be, extinguished by deducting therefrom the amount allowed by way of relief as mentioned in paragraph (a) above.
(2)For the purposes of sub-paragraph (1)(c) above, in relation to the primary dividend, another dividend is a relevant dividend if—
(a)it is a dividend in respect of shares in a company which is resident outside the United Kingdom; and
(b)it represents profits which, directly or indirectly, consist of or include the primary dividend.