20(1)An “associated undertaking” means an undertaking in which an undertaking included in the consolidation has a participating interest and over whose operating and financial policy it exercises a significant influence, and which is not—
(a)a subsidiary undertaking of the parent company, or
(b)a joint venture dealt with in accordance with paragraph 19.
(2)Where an undertaking holds 20 per cent. or more of the voting rights in another undertaking, it shall be presumed to exercise such an influence over it unless the contrary is shown.
(3)The voting rights in an undertaking means the rights conferred on shareholders in respect of their shares or, in the case of an undertaking not having a share capital, on members, to vote at general meetings of the undertaking on all, or substantially all, matters.
(4)The provisions of paragraphs 5 to 11 of Schedule 10A (rights to be taken into account and attribution of rights) apply in determining for the purposes of this paragraph whether an undertaking holds 20 per cent. or more of the voting rights in another undertaking.