In the case of an enforcement notice given to a person other than the registered social landlord by virtue of section 50C(11), the Welsh Ministers may only—
exercise the power to issue a penalty notice to the person in accordance with the next group of sections, or
take steps to have the person prosecuted for the offence by reference to which the enforcement notice was given.
A person to whom an enforcement notice is given on the ground in Case 8 of section 50C may not be prosecuted for the offence by reference to which the enforcement notice was given unless the person fails to comply with the enforcement notice.