18.—(1) A person who desires to take a test to be conducted by an examiner appointed under paragraph (1)(a) of regulation 14 shall apply for an appointment for such a test to the clerk to the traffic commissioner.
(2) An applicant for such an appointment as aforesaid shall, when making the application, pay to the said clerk such fee in respect of the test as is specified in paragraph (3) of regulation 19 and the clerk shall make any arrangements necessary for the taking of the test.
(3) For the purposes of paragraph (b) of section 86 of the 1972 Act (which section specifies the only circumstances in which a fee paid on application for an appointment for a test may be repaid) notice cancelling an appointment for such a test as is mentioned in paragraph (1) shall be given to the clerk to the traffic commissioner by whom the appointment was made not less than three clear days (excluding Saturdays, Sundays, any bank holiday, Christmas Day or Good Friday) before the date of the appointment.
(4) In paragraph (3) “bank holiday” means a day which is, or is to be, observed as a bank holiday or a holiday under the Banking and Financial Dealings Act 1971(1), either generally or in the locality in which is situated the office of the clerk to the traffic commissioner to whom notice cancelling an appointment for a test falls to be given.