Summary: A specified quantity is a fixed size in which goods must be sold; Great Britain prescribes serving measures for still wine and fortified wine, and package volumes for those wines and spirit drinks.
Reference: Weights and measures: the law (opens in a new tab)
Department for Business and Trade · Reference checked 21 July 2026
Where to look: Specified quantities introduction and the Alcohol tables
The summary above is a concise paraphrase of the cited material. It is not a quotation or a complete statement of law.
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