Where any steps required by an enforcement notice to be taken are not taken within the period for compliance with the notice, the local planning authority may—
Where a copy of an enforcement notice has been served in respect of any breach of planning control . . .—
shall be deemed to be incurred or paid for the use and at the request of the person by whom the breach of planning control was committed.
Regulations made under this Act may provide that—
shall apply, subject to such adaptations and modifications as may be specified in the regulations, in relation to any steps required to be taken by an enforcement notice.
Regulations under subsection (3) applying section 289 of the Public Health Act 1936 may include adaptations and modifications for the purpose of giving the owner of land to which an enforcement notice relates the right, as against all other persons interested in the land, to comply with the requirements of the enforcement notice.
Regulations under subsection (3) may also provide for the charging on the land of any expenses recoverable by a local planning authority under subsection (1).
Any person who wilfully obstructs a person acting in the exercise of powers under subsection (1) shall be guilty of an offence and liable on summary conviction to a fine not exceeding level 3 on the standard scale.