2. In connection with a major application for a marketing authorization for which the fee payable is that specified in entry 1(f) of the table in paragraph 24 of Part 2 of Schedule 2, the fee payable under regulation 12(1)(a) shall, if the applicant so requests in writing, be payable as to 25% at the time of the application and as to 75% within 30 days following written notice from the licensing authority that the application has been determined.