12. For the purposes of articles 13 to 16 below and Schedule 2 to this Order—
“equivalent price per gallon”, in relation to a price per litre, means the price that would be payable if the price were calculated by reference to the gallon on the basis that one litre is equivalent to 0.22 gallon, rounded up to the nearest tenth of a penny;
“price”, except in the next following definition, means a price per gallon or per litre for the sale of motor fuel and in article 16(1)(b) below, Part I and paragraphs 5(3)(b) and 7 of Schedule 2 includes a price the amount of which is calculated by, or is dependent upon, some factor other than the measure of volume of the motor fuel supplied;
“price display premises” means premises on which motor fuel is or may be for sale by retail and on which is displayed information legible to a person in a motor vehicle on the highway as to or concerning the price of motor fuel or of any grade or type of motor fuel, not being an indication of price given in compliance with article 13 below;
“pump” means a measuring instrument for measuring and delivering quantities of motor fuel primarily into the tanks of motor vehicles; and
references in article 16(1) below and in paragraph 5(3) of Schedule 2 to “method of payment” do not include a method of payment which is available only to persons having a pre-existing contractual or other connection with the person indicating the price in question or with some person connected with him, being a connection which relates principally to matters other than payment in respect of transactions between that person and the purchaser, and references in paragraph 5(3) of Schedule 2 to “different circumstances” and in paragraph 9(2) of Schedule 2 to “some condition” do not include an arrangement relating to the amount payable only by such persons.