30.—(1) In the case of prepacked alcoholic drinks other than Community controlled wine, every drink with an alcoholic strength by volume of more than 1.2 per cent shall be marked or labelled with an indication of its alcoholic strength by volume in the form of a figure to not more than one decimal place (which may be preceded by the word “alcohol” or by the abbreviation “alc”) followed by the symbol “% vol”.
(2) Positive and negative tolerances shall be permitted in respect of the indication of alcoholic strength by volume and shall be those specified in Schedule 5, expressed in absolute values.
(3) For the purposes of this regulation, the alcoholic strength of any drink shall be determined at 20°C.