5.—(1) Where an application is made to register an instrument relating to several folios in some or one only of those folios, the fee shall be that which would be payable if the application were to register the instrument in all the folios to which it relates.
(2) Where an instrument relating to several folios has been registered in some or one only of those folios, a fee of £20 shall be payable in respect of any application to register the instrument in any of the other folios to which it relates.