7.—(1) In any case where—
- (a) a consortium claim is made in respect of the loss or other amount of a relevant accounting period of a company owned by a consortium (in this paragraph that claim is referred to as "the primary claim", that company is referred to as "the principal surrendering company" and that accounting period is referred to as "the principal accounting period"), and
- (b) the company making the primary claim or, if that claim is made by virtue of paragraph 5 above, the company which is the link company for the purposes of that paragraph was not a member of the consortium throughout the whole of the principal accounting period, and
- (c) on or after the date on which the primary claim is made, a consortium claim is made which falls within sub-paragraph (2) below,
no relief shall be allowed on the primary claim, or, as the case may be, any relief which was so allowed shall be withdrawn.