(1)Any person aggrieved by—
(a)a demolition or closing order made under this Part of this Act, or
(b)a notice of the determination of a local authority to purchase a house served under the last foregoing section,
may, within twenty-one days after the date of the service of the order or notice, appeal to the county court within the jurisdiction of which the premises to which the order or notice relates are situate, and no proceedings shall be taken by the local authority to enforce any order or notice in relation to which an appeal is brought before the appeal has been finally determined.
(2)No appeal shall lie under this section at the instance of a person who is in occupation of the premises to which the order or notice relates under a lease or agreement of which the unexpired term does not exceed three years.
(3)On an appeal to the county court under this section the judge may make such order either confirming or quashing or varying the order or notice as he thinks fit and may, if he thinks fit, accept from an appellant any such undertaking as might have been accepted by the local authority, and any undertaking so accepted by the judge shall have the like effect as if it had been given to and accepted by the local authority under this Part of this Act:
Provided that the judge shall not accept from an appellant upon whom such a notice as is mentioned in subsection (1) of section sixteen of this Act was served an undertaking to carry out any works unless the appellant complied with the requirements of subsection (3) of that section.