(1) Nothing in an enactment specified in subsection (2) prejudices the operation of this Part or Part 3A.

(2) The enactment mentioned in subsection (1) is an enactment (other than an enactment contained in this Part or Part 3A) that requires, in respect of the doing of the act or acts that comprise a merger or acquisition to which paragraph (a) or (b) of section 18(1), or section 28B(1), applies, the doing of that act or those acts to be either -

(a) sanctioned, whether such sanctioning takes the form of the making by a court of an order or the granting by a person of any other form of consent, or

(b) the subject of any form of registration of a resolution passed by one or more undertakings.