15.—(1) The applicant shall, forthwith after the application has been made, serve a notice in the form of Form 5 in Schedule 2 to these Rules (in this rule referred to as “Form 5”) upon all those, other than the applicant and the owner of any Crown interest, named in the book of reference described in rule 12(8).
(2) In every case where, pursuant to rule 12(10), the applicant has indicated in the book of reference that relevant names have or might have been omitted, he shall, forthwith after the application has been made, serve a notice in the form of Form 5 in the manner provided by section 66(4)(a) and (b).