(1) Where a vehicle insurer has issued a certificate of insurance certifying that an approved policy of insurance has been issued by him to a specified person -
(a) if and so long as no such policy as is described in the certificate has been issued, the insurer shall, as between himself and any other person except the specified person, be deemed to have issued to the specified person an approved policy of insurance conforming in all respects with the description and particulars stated in the certificate, and
(b) if the insurer has issued to the specified person a policy such as is described in the certificate, but the actual terms of the policy are less favourable to persons claiming under or by virtue of the policy against the insurer, either directly or through the specified person, than the particulars of the policy as stated in the certificate, the policy shall, as between the insurer and any other person except the specified person, be deemed to be in terms conforming in all respe
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