26.—(1) The licence-holder shall produce the licence for inspection by an officer or a police constable on being required by such a person to do so, and the licence-holder may do so at any operating centre covered by the licence or at his head or principal place of business within the traffic area in which any such operating centre lies or, if the requirement is made by a police constable, at a police station chosen by the licence-holder.
(2) The licence-holder shall comply with any requirement mentioned in paragraph (1) within 14 days of the day on which the requirement is made.