(1) A public vehicle policy issued for a public vehicle by an authorised insurer—
(a) begins on the date it is expressed to begin; and
(b) continues in force—
(i) if another public vehicle policy issued for the vehicle by the same or another authorised insurer begins within 15 days after the date when the first policy is expressed to end—until the beginning of the other policy; and
(ii) in any other case—until 15 days after the date it is expressed to end.
(2) If an authorised insurer renews a public vehicle policy for a public vehicle for a period expressed to end on the expiry of a renewal of the registration of the vehicle—
(a) the insurance premium for the policy is payable as if the renewal of the policy were expressed to begin from the date of the beginning of the renewal of the registration, whether or not the renewal of the policy is so expressed; and
(b) the authorised insurer is not liable under the renewal of the policy in relation to any damage to property caused by, or arising out of the use of, the vehicle during the period (if any) between the date from which the renewal of the policy is expressed to begin and the date of payment of the insurance premium for the renewal of the policy.
(3) However, subsection (2) does not affect the operation of subsection (1), or exempt an authorised insurer from liability under a policy continued in force by that subsection.