21.— Section 23B (inserted by section 184 of the Act of 2006) of the Act of 1994 is amended, in subsection (2), by deleting “after serving on the person personally a notice in the prescribed form stating the matters specified in section 23A(5) or cause it to be so served.” and substituting the following:

“after—

(i) serving on the person personally a notice in the prescribed form stating the matters specified in section 23A(5) or causing it to be so served, or

(ii) informing him or her that such notice will be served on him or her by post.”.