(a) In this section -
"trading or holding company" means a trading company or a company whose business consists wholly or mainly in the holding of shares or securities of trading companies which are its 90 per cent subsidiaries;
"trading company" means a company whose business consists wholly or mainly of the carrying on of a trade or trades.
(b) For the purposes of this section, a company shall be owned by a consortium if 75 per cent or more of the ordinary share capital of the company is beneficially owned between them by 5 or fewer companies of which none beneficially owns less than 5 per cent of that capital, and those companies are referred to in this section as "the members of the consortium".
(c) In determining for the purposes of this section whether one company is a 51 per cent subsidiary of another company, that other company shall be treated as not being the owner of -
(i) any share capital which it owns directly or indirectly in a company not resident in the State,