24.—(1) Where a derelict sites levy for a local financial year, or any portion of it, is due and owing, the amount of the levy and the interest due and payable thereon shall, on the date on which it becomes so due and payable, become and shall remain until payment thereof, a charge on the relevant urban land.

(2) Subsection (1) shall not apply in any case where a vesting order is made in relation to a derelict site.