Paragraph 17
A listed building enforcement notice shall be served on the owner and occupier of the building to which it relates, and on any other person having an interest in the building, being an interest which in the opinion of the authority is materially affected by the notice.
Subject to the following provisions of this Schedule, a listed building enforcement notice shall take effect at the end of such period, not less than twenty-eight days after the service of the notice, as may be specified therein.
The local planning authority may withdraw a listed building enforcement notice (without prejudice to their power to serve another) at any time before it takes effect; and if they do so, they shall forthwith give notice of the withdrawal to every person who was served with the notice.