The Court of Justice of the European Union is the busiest court in the world The second edition of this textbook explores why this is It examines in detail the interactions between European Union and national institutions instruments laws and concepts that make up this unique legal order It explains the core constitutional and substantive principles that underpin the European Union legal order and introduces EU law in a detailed comprehensive way which is both enjoyable and clear to read It offers an up to date and accessible analysis of EU law and avoids technical jargon providing informed insights on an exciting but challenging subject Combining a historical perspective with up to date examples it aims to help students appreciate how EU law developed and its continued significance in day to day life This updated edition features new coverage on free movement online resources plus additional chapters on Article 50 and EU law in the UK after Brexit