27.—(1) Before determining an application for planning permission for a development within the classes of development specified in paragraph (2), the planning authority are to give to the applicant and to persons who submit representations to the planning authority in respect of that application in accordance with these Regulations an opportunity of appearing before and being heard by a committee of the authority.
(2) The classes of development prescribed for the purposes of section 38A(1) of the Act (pre-determination hearings) are developments within the categories of—
(a)national developments; and
(b)major developments which are significantly contrary to the development plan.