Judgments of the Court of Justice in Case C-77/05 and Case C-137/05. United Kingdom of Great Britain and Northern Ireland v Council of the European Union

The United Kingdom and Ireland may take part in the adoption of measures developing the Schengen acquis only to the extent that they already take part in the provisions on which the new measure is based. The Council was right to refuse to allow the United Kingdom to take part in the adoption of the Frontex Regulation and the Regulation establishing standards for security features and biometrics in passports.