Section 21 (2), The Crown Lands Ordinance, 1960

(1) When in any lease under this Ordinance the lesseehas covenanted to develop or effect improvements on the land leased and has committed a breach of such covenant the grantor may at the time of such breach or at any time thereafter, and at the expiration of every year thereafter so long as the breach be not remedied, fix a penal rent which shall be payable for one addition to and at the same time and manner as the rent reserved is payable and shall be recoverable as rent. The first penal rent shall not exceed the rent reserved in the lease and penal rents subsequently fixed shall not exceed double the penal rent payable in respect of the preceding year. (2) Notice of such penal rent being imposed and the amount thereof and the date from which it is payable shall be given in writing to the lessee. (3) The fact that a penal rent has been imposed shall not preclude the grantor, in lieu of fixing a subsequent penal rent, from taking or directing to be taken proceedings for the forfeiture of the lease by reason of the breach in relation to which the penal rent has been imposed, provided that such proceedings shall not be taken during the period for which a penal rent has been paid.