(1) A licence granted to a lessee shall, unless a contrary intention is expressed, extend only-

(a) to any matter specifically authorised to be done or to be omitted to be done; or

(b) to the specific breach of any provision expressly referred to; and shall not bar any proceeding for any subsequent breach of the lease.

(2) Notwithstanding any such licence-

(a) all rights under covenants and powers of re-entry contained in the lease remain in force and are available as against any subsequent breach of covenant, condition or other matter not specifically authorised or waived, in the same manner as if no licence had been granted; and

(b) the condition or right of entry remains in force in all respects as if the licence had not been granted, except in respect of the particular matter authorised to be done.