6. Where a licensee is liable to pay a levy to the OGA in accordance with these regulations, the OGA must notify the licensee in writing by 31st May 2018 as to—
(a)whether the licensee is liable for the production levy or the non-production levy;
(b)the amount so payable;
(c)the date by which that amount is to be paid, being a date not less than 30 days after the date of the notification; and
(d)details of how the payment can be made.