139Penalty for occupier causing or permitting overcrowding
(1)The occupier of a house who causes or permits it to be overcrowded is guilty of an offence, subject to subsection (2).
(2)The occupier is not guilty of an offence—
(a)if the overcrowding is within the exceptions specified in sections 140 or 141 (children attaining age of 10 or temporary visitor), or
(b)by reason of anything done under the authority of, and in accordance with any conditions specified in, a licence granted by the local authority under section 142 or a resolution passed under section 143.
(3)A person committing an offence under this section is liable on summary conviction to a fine not exceeding level 1 on the standard scale.