In the case of an offer which could result in the offeror and persons acting in concert with it holding 30% or more, but which must result in their holding less than 100%, of the voting rights of a company, such consent will not normally be granted if the offeror or persons acting in concert with it have acquired, selectively or in significant numbers, voting rights in the offeree company during the 6 months preceding the application for consent or if voting rights have been acquired at any time after the partial offer was reasonably in contemplation.