Where, at any time after the end of the period for compliance with the notice, any step required by a listed building enforcement notice to be taken has not been taken, the person who is then owner of the land is in breach of the notice.
If at any time the owner of the land is in breach of a listed building enforcement notice he shall be guilty of an offence.
An offence under this section may be charged by reference to any day or longer period of time and a person may be convicted of a second or subsequent offence under this section by reference to any period of time following the preceding conviction for such an offence.
In proceedings against any person for an offence under this section, it shall be a defence for him to show—
A person guilty of an offence under this section shall be liable on summary conviction, or on conviction on indictment, to a fine.
In determining the amount of any fine to be imposed on a person convicted of an offence under this section, the court shall in particular have regard to any financial benefit which has accrued or appears likely to accrue to him in consequence of the offence.