A primary source of law in the UK. A Bill becomes an Act of Parliament when it has been approved by both Houses of Parliament and has been given Royal Assent by the Queen. Acts of Parliament remain in force until amended or repealed by a subsequent Act.

The date when a Regulation becomes mandatory, which may be different from the date of its entry into force, is known as its date of applicability.

The date when a Regulation becomes mandatory, which may be different from the date of its entry into force, is known as its date of applicability.

The date when a Regulation becomes mandatory, which may be different from the date of its entry into force, is known as its date of applicability.

The judicial arm of the European Union. The CJEU is the guardian of the EU Treaties, ensuring EU law is interpreted and applied consistently in each Member State and settling legal disputes regarding the application of EU law between Member States and the EU institutions.

EU Decisions are a form of legal instrument of the EU that can be made by one or more EU institutions and are binding in their entirety and apply directly in the UK by virtue of the UK's membership of the EU. A decision which specifies those to whom it is addressed is binding only on them.

EU Decisions addressed to one or several specific individuals and companies may be directly enforceable by or against them in the national courts.

The Repeal Bill grants the UK Government the power to amend UK law to prevent, remedy or mitigate any "failure" or "deficiency" in retained EU law arising from the withdrawal of the UK from the EU. The Repeal Bill does not define what qualifies as a "failure" or "deficiency" of retained EU law.  It does give a non-exhaustive list of examples, including where retained EU law:

• has no practical application in relation to the UK or is otherwise redundant;

• confers functions on EU entities that no longer have functions in relation to the UK;

• involves reciprocal arrangements between the UK (or a UK body) and the EU (or a EU entity) which will no longer exist or be appropriate;

• contains EU references which are no longer appropriate.

A term used in the Repeal Bill for EU instruments that apply directly in the UK before exit day, including, for example, any EU Regulations, EU Decisions or EU tertiary legislation that have effect in EU law immediately before exit day.

The date on which the EU Regulation enters into force is usually the 20th day following its publication in the Official Journal of the European Union. The Regulation has legal effect from this date, but may not be mandatory until a later date, known as the date of applicability.

EU Decisions are a form of legal instrument of the EU that can be made by one or more EU institutions and are binding in their entirety and apply directly in the UK by virtue of the UK's membership of the EU. A decision which specifies those to whom it is addressed is binding only on them.

EU Decisions addressed to one or several specific individuals and companies may be directly enforceable by or against them in the national courts.

An EU Directive is a legal act of the European Union that is binding as to the results to be achieved, but leaves the detailed implementation of those results to the Member States themselves. As such, Directives are usually not directly enforceable in the national courts other than through their domestic implementing legislation, but they can influence the interpretation of such domestic implementing legislation.

An EU Regulation is a legal act of the European Union that applies directly in the domestic law of Member States, without the need for further domestic implementing legislation. 

A term used in the Repeal Bill to include any UK legislation enacted for the purposes of implementing EU law obligations or otherwise relating to the EU or the EEA. 

The date on which the UK will withdraw from the EU is not determined by the Repeal Bill. Instead, the Repeal Bill provides that 'exit day' will be the day determined later by the UK Government.

The date on which the EU Regulation enters into force is usually the 20th day following its publication in the Official Journal of the European Union. The Regulation has legal effect from this date, but may not be mandatory until a later date, known as the date of applicability.

For the purposes of the Repeal Bill, an EU Regulation is 'operative' when it is both in force and applicable.

Where a legal dispute before the national courts of an EU Member State requires the determination of a question of EU law, the national courts may (and, in certain circumstances, must) make a preliminary reference to the CJEU. Upon hearing the reference, the CJEU will give a binding judgment as to the correct interpretation of the relevant EU law, after which the matter reverts back to the national court for the determination of the wider dispute.

Where a legal dispute before the national courts of an EU Member State requires the determination of a question of EU law, the national courts may (and, in certain circumstances, must) make a preliminary reference to the CJEU. Upon hearing the reference, the CJEU will give a binding judgment as to the correct interpretation of the relevant EU law, after which the matter reverts back to the national court for the determination of the wider dispute.

Where a legal dispute before the national courts of an EU Member State requires the determination of a question of EU law, the national courts may (and, in certain circumstances, must) make a preliminary reference to the CJEU. Upon hearing the reference, the CJEU will give a binding judgment as to the correct interpretation of the relevant EU law, after which the matter reverts back to the national court for the determination of the wider dispute.

An EU Regulation is a legal act of the European Union that applies directly in the domestic law of Member States, without the need for further domestic implementing legislation. 

UK Statutory Instruments are a type of delegated (or secondary) legislation. They can be used by the UK Government to make detailed rules under enabling powers granted by an Act of Parliament and without the need for a new Act. They often take the form of regulations, rules or orders. An Act of Parliament will often contain the broad framework of the legislation, while the detailed rules, which would be too complex to include in the Act, are set out in statutory instruments devised by government ministers and enacted under powers conferred on them to do so by the Act. Powers granted to government ministers to amend Acts of Parliament using statutory instruments are known as "Henry VIII powers", as they allow the UK Government to amend primary legislation enacted by Parliament, contrary to the principle of the separation of powers.