288.Section 86 provides that when a person fails without reasonable excuse to comply with a notice issued under section 85, the CAA may impose a penalty, or enforce the duty to comply in civil proceedings for an injunction, or both. The amount of the penalty as determined by the CAA must be appropriate and proportionate to the offence and may be either a fixed amount of up to £50,000 or a daily amount of up to £5,000 (or both). The Secretary of State may vary the maximum fixed and daily amounts by regulations which must be approved in each House of Parliament.