26.—(1) A large vehicle instructor who wishes to make an appointment for a practical test prescribed in respect of category B + E, C, C + E, D or D + E which is to be conducted by a DSA examiner and taken by a person who has, or will have, received from that instructor instruction in the driving of a class of vehicle included in any of those categories shall—
(a)apply for such an appointment to the licensing authority, specifying the date and time for the appointment which the instructor wishes to reserve and the place where he wishes the test to be conducted,
(b)provide such details relating to—
(i)himself,
(ii)his establishment,
(iii)the vehicle on which the test is to be taken, and
(iv)the nature of the test,
as the licensing authority may reasonably require, and
(c)pay such fee (recoverable from the person nominated under paragraph (4)) as is specified in regulation 27.
(2) The licensing authority may refuse to accept an application from a large vehicle instructor (or, where two or more applications have been made on the same occasion, to accept all or any of those applications) where an appointment specified in the application is unavailable or where, in the opinion of the licensing authority, it is reasonably necessary to do so in the general interests of applications for practical or unitary tests.
(3) Subject to paragraphs (2) and (5), upon receipt of such details and such fee the licensing authority shall confirm to the large vehicle instructor the date and time of the appointment.
(4) If, before the expiration of the qualifying period, the licensing authority receives from the large vehicle instructor the name and such further details relating to—
(a)the person receiving instruction from that instructor who will at the appointment submit himself for that test,
(b)the licence which that person holds,
(c)the nature of the test, and
(d)the vehicle on which the test is to be taken,
as the licensing authority may reasonably require, the licensing authority shall make the arrangements necessary for the taking of the appropriate test.
(5) A person nominated by a large vehicle instructor pursuant to paragraph (4) for a practical test in respect of any class of vehicle may neither be so nominated nor apply under regulation 24 for a further appointment for a test in respect of a motor vehicle of a class included in the same category unless—
(a)the appointment made pursuant to the first nomination has been cancelled, or
(b)the test due on that appointment does not take place for any reason other than cancellation, or
(c)he has kept that appointment (whether or not the test is completed).
(6) The qualifying period for the purposes of paragraph (4) is the period expiring at midday on the day which is two working days before the day for which the appointment is made.