For regulation 3(3) of the principal regulations there shall be substituted the following:–
(3) Notices of such date, time and place shall be given by the committee, not less than 14 days before the said date—
(a) Where the reference is an application for a certificate of fair rent referred pursuant to paragraph 7 of Schedule 12 to the Rent Act 1977 , to the applicant and, in a case to which paragraph 11 of the said Schedule applies, to the tenant;
(b) where the reference is an application supported by a certificate of fair rent referred pursuant to paragraph 11 of Schedule 11 to the Rent Act 1977, to the applicant; and
(c) in every other case, to the landlord and the tenant.