In practice, a distinctly applicable measure is a national rule or administrative practice that applies specifically to imported or exported goods, but not to comparable domestic goods, thereby directly discriminating by origin. In EU free movement of goods law, this is a descriptive term developed in Court of Justice case law (for example, Dassonville), used to identify quantitative restrictions and measures having equivalent effect prohibited by Articles 34 and 35 TFEU.
Common examples include import‑only licensing or certification requirements,
rules reserving distribution channels to domestic products, or state‑backed “buy national” campaigns. Such measures are presumptively unlawful unless justified under the express Treaty derogations in Article 36 TFEU (for example, public morality, public policy, public security, or protection of health) and must meet strict necessity and proportionality tests. They cannot be justified by the Cassis “mandatory requirements”, which relate to indistinctly applicable rules.
Usage is broadly consistent across England & Wales, Scotland, Northern Ireland and Ireland. Following Brexit, the concept continues to apply directly in Ireland and, for goods, in Northern Ireland under the Windsor Framework. In Great Britain, it chiefly features when interpreting retained EU law and in comparative analysis of trade and market access rules.