8.—(1) The contractor shall indicate on the form supplied to the Relevant Body pursuant to paragraph 39 of Schedule 3 (notification of a course of treatment) whether or not the orthodontic course of treatment was completed.
(2) If the Relevant Body requests in writing that the contractor provides reasons for the failure to complete one or more orthodontic courses of treatment, the contractor shall, within such period as the Relevant Body may specify, provide the reasons for that failure.
(3) If the Relevant Body—
(a)determines that the number of orthodontic courses of treatment provided by the contractor which have not been completed is excessive; and
(b)does not consider that the reasons given by the contractor for the failure to complete the orthodontic courses of treatment are satisfactory,
it shall be entitled to exercise its powers under paragraph 71 of Schedule 3 on the grounds that the contractor is not, pursuant to paragraph 5(3), using its best endeavours to ensure orthodontic courses of treatment are completed.