s 141 Stop notices: supplementary provisions.
(1) A stop notice shall cease to have effect when— (a) the enforcement notice to which it relates is withdrawn or quashed, (b) the compliance period specified under section 128(9) expires, or (c) notice of the withdrawal of the stop notice is served under section 140(9), whichever occurs first. (2) Where the enforcement notice to which a stop notice relates is varied so that it no longer relates to any relevant activity, the stop notice shall cease to have effect in relation to that activity. (3) Where a stop notice has been served in respect of any land, the planning authority may publicise it by displaying on the land a notice (in this section and section 144 referred to as a “ site notice ”)— (a) stating that a stop notice has been served on a particular person or persons, (b) indicating its requirements, and (c) stating that any person contravening it may be prosecuted for an offence under section 144. (4) A stop notice shall not be invalid by reason that a copy of the enforcement notice to which it relates was not served as required by section 127 if it is shown that the planning authority took all such steps as were reasonably practicable to effect proper service.