(1) Deferment shall be granted upon the giving of notice by an approved person that he wishes excise duty in respect of any goods to be deferred until a day, to be known as “payment day”, provided that the notice is given in such form and manner and contains such particulars as the Commissioners may require and provided that the provisions of these Regulations are complied with.
(2) Subject to regulation 6 below, on each payment day an approved person shall pay to the Commissioners the total amount of excise duty of which he has been granted deferment until that payment day.
(3) Payment day shall be—
(a) in the case of beer imported by a registered excise dealer and shipper, the 25th day of the month following the month in which the duty would, but for deferment granted by these Regulations, be payable;
(b) in the case of any goods other than beer imported by a registered excise dealer and shipper, the 15th day of the month following the month in which the duty on those goods would, but for deferment granted by these Regulations, be payable;
(ba) in the case of biofuels on which the duty would, but for deferment granted by these Regulations, be payable on or after the 15th day of one month and not later than the 14th day of the next month, the last business day of that next month;
(c) in the case of hydrocarbon oils delivered for home use from a refinery or other premises used for the production of hydrocarbon oil or from an excise warehouse on or after the 15th day of one month and not later than the 14th day of the next month, the last business day of that next month; and
(d) in any other case, where the duty on those goods would, but for deferment granted by these Regulations, be payable on or after the 15th day of one month and not later than the 14th day of the next month, either—
(i) the 29th day of that next month; or
(ii) where that next month has only 28 days, the 28th day of that month;
provided that where the payment day would, if determined in accordance with the foregoing provisions of this paragraph, fall on a day upon which the Bank of England is closed, the payment day shall be, in the case mentioned in sub-paragraph (b) above the next business day following that day and, in any other case, the last business day preceding that day.