30Ownership of copyright for particular purposes

30  Ownership of copyright for particular purposes   In the case of a copyright of which (whether as a result of a partial assignment or otherwise) different persons are the owners in respect of its application to:  (a) the doing of different acts or classes of acts; or  (b) the doing of one or more acts or classes of acts in different countries or at different times; the owner of the copyright, for any purpose of this Act, shall be deemed to be the person who is the owner of the copyright in respect of its application to the doing of the particular act or class of acts, or to the doing of the particular act or class of acts in the particular country or at the particular time, as the case may be, that is relevant to that purpose, and a reference in this Act to the prospective owner of a future copyright of which different persons are the prospective owners has a corresponding meaning.