It shall be prohibited:

(a) to authorise the opening of a representative office or the establishment of a branch or subsidiary in the Union of a credit or financial institution referred to in Article 21(2);

(b) to conclude agreements for, or on behalf of, a credit or financial institution referred to in Article 21(2) pertaining to the opening of a representative office or the establishment of a branch or subsidiary in the Union;

(c) to grant an authorisation for taking up and pursuing the business of a credit institution or for any other business requiring prior authorisation, by a representative office, branch or subsidiary of a credit or financial institution referred to in Article 21(2), if the representative office, branch or subsidiary was not operational before 19 February 2013;

(d) to acquire or to extend a participation, or to acquire any other ownership interest, in a credit or financial institution falling within the scope of Article 1 by any credit or financial institution referred to in Article 21(2); and