5.—(1) Subject to paragraph (2) of this article, wine and made-wine for consumption on the premises at which it is sold shall—
(a)be pre-packed only in one of the following quantities, that is to say—
(i)25 cl, 50 cl, 75 cl, or 1 L; or
(ii)10 fl oz, or 20 fl oz;
(b)when not pre-packed, be sold only in those quantities; and
(c)whether pre-packed or not, be sold only if a statement in writing showing the quantities in which wine or made-wine is for sale is either displayed on those premises in such a position and manner as to be readily available without special request for inspection by the buyer before the sale is made, or is contained in every winelist and menu which is available to the buyer on those premises before the sale is made and which indicates that wine or made-wine is for sale for consumption on those premises.
(2) Paragraph (1) above shall not apply in the case of wine or made-wine which—
(a)is pre-packed in a securely closed container whether or not it is to be decanted at the request of the buyer before being served; or
(b)is sold in the glass or other vessel from which it is intended to be drunk.