If the whole or any part of a penalty is not paid by the time by which, in accordance with licensing rules, it is required to be paid, the unpaid balance from time to time carries interest at the rate for the time being specified in section 17 of the Judgments Act 1838 (c. 110).
Where a penalty, or any portion of it, has not been paid by the time by which, in accordance with licensing rules, it is required to be paid and—
no appeal relating to the penalty has been made under section 96 during the period within which such an appeal can be made, or
an appeal has been made under that section and determined or withdrawn,
the licensing authority may recover from the person on whom the penalty was imposed, as a debt due to the licensing authority, any of the penalty and any interest which has not been paid.
A licensing authority must pay into the Consolidated Fund any sum received by it as a penalty (or as interest on a penalty).