20. On referring an application under regulation 6, 7 or 8 to the Scottish Ministers in accordance with a direction given under section 18 of the principal Act a planning authority must serve on the applicant a notice—
(a)advising that the application has been referred to the Scottish Ministers;
(b)setting out the reasons given by the Scottish Ministers for giving the direction; and
(c)advising that the applicant may, if they wish, have an opportunity of appearing before and being heard by a person appointed for that purpose.