Regulation (European Union) in the context of "European Communities Act 1972 (UK)"

In the law of the European Union, direct effect is the principle that Union law may, if appropriately framed, confer rights on individuals which not only the courts but also the public administration (on national, regional or local level) of member states of the European Union are bound to recognise and enforce.

Direct effect is not explicitly stated in any of the EU Treaties. The principle of direct effect was first established by the Court of Justice of the European Union (CJEU) in Van Gend en Loos v. Nederlandse Administratie der Belastingen. Direct effect has subsequently been loosened in its application to treaty articles and the ECJ has expanded the principle, holding that it is capable of applying to virtually all of the possible forms of EU legislation, the most important of which are regulations, and in certain circumstances to directives.

The United Kingdom has three distinctly different legal systems, each of which derives from a particular geographical area for a variety of historical reasons: English law (in the joint jurisdiction of England and Wales), Scots law, Northern Ireland law, and, since 2007, calls for a fourth type, that of purely Welsh law as a result of Welsh devolution, with further calls for a Welsh justice system.

In fulfilment of its former EU treaty obligations, European Union directives had been transposed into the UK legal system on an ongoing basis by the UK parliament. Upon Brexit, non-transposed EU law (such as regulations) was transplanted into domestic law as "retained EU law", with an additional period of alignment with EU law during the transition period from 31 January to 31 December 2020.

Regulation (EU) 2017/745 is a regulation of the European Union on the clinical investigation and placing on the market of medical devices for human use. It repealed Directive 93/42/EEC on Medical Devices (MDD) and Directive 90/385/EEC on active implantable medical devices (AIMDD).

The regulation was published on 5 April 2017 and came into force on 25 May 2017, with effect from 26 May 2021.

A European Economic Interest Grouping (EEIG) is a type of legal entity of the European corporate law created on 25 July 1985 under European Community (EC) Council Regulation 2137/85. It is designed to make it easier for companies in different countries to do business together, or to form consortia to take part in EU programmes.

Its activities must be ancillary to those of its members, and, as with a partnership, any profit or loss it makes is attributed to its members. Thus, although it is liable for VAT and employees’ social insurance, it is not liable to corporation tax. It has unlimited liability. It was based on the pre-existing French groupement d´intérêt économique (G.i.e.).

The European Citizens' Initiative (ECI) is a European Union (EU) mechanism aimed at increasing direct democracy by enabling "EU citizens to participate directly in the development of EU policies", introduced with the Treaty of Lisbon in 2007. This popular initiative enables one million citizens of the European Union, with a minimum number of nationals from at least seven member states, to call directly on the European Commission to propose a legal act (notably a Directive or Regulation) in an area where the member states have conferred powers onto the EU level. This right to request the commission to initiate a legislative proposal puts citizens on the same footing as the European Parliament and the European Council, who enjoy this right according to Articles 225 and 241 of the Treaty on the Functioning of the European Union (TEFU). The commission holds the right of initiative in the EU.[1] The first registered ECI, Fraternité 2020, was initiated on 9 May 2012 (Europe Day), although the first submitted ECI (but second registered) was One Single Tariff.

The Citizens' Rights Directive 2004/38/EC (also sometimes called the "Free Movement Directive") sets out the conditions for the exercise of the right of free movement for citizens of countries in the European Economic Area (EEA), which includes the member states of the European Union (EU) and the three European Free Trade Association (EFTA) members Iceland, Norway and Liechtenstein. Switzerland, which is a member of EFTA but not of the EEA, is not bound by the Directive but rather has a separate multilateral sectoral agreement on free movement with the EU and its member states.

It consolidated older regulations and directives, and extended the rights of unmarried couples. It gives citizens of EEA countries the right of free movement and residence across the European Economic Area, as long as they are not an undue burden on the country of residence and have comprehensive health insurance. This right also extends to close family members that are not citizens of EEA countries.