Restrictions on development by certain local authorities.
178.—(1) The council of a county shall not effect any development in its functional area, exclusive of any borough or urban district, which contravenes materially the development plan.
(2) The corporation of a county or other borough shall not effect any development in the borough which contravenes materially the development plan.
(3) The council of an urban district shall not effect any development in the district which contravenes materially the development plan.
