Craies on Legislation: A Practitioner's Guide to the Nature, Process, Effect and Interpretation of Legislation 13th ed with 1st Supplememt

Craies on Legislation is the complete practitioners' guide to the nature, process, effect and interpretation of legislation. It is regularly cited to and by the higher courts, and it is relied upon by lawyers in the public and private sectors for shedding light on the widest range of questions in relation to how legislation is made, applied, challenged and interpreted.

The 13th edition features:

• New material on emergency legislation, including rule of law lessons from COVID-19 legislation
• Validation legislation
• New judicial applications of old presumptions and principles
• Consideration of secret law
• Supreme Court codification of principles of interpretation
• Changes in treatment of EU-derived legislation

The 13th edition, published in December 2024, is now accompanied by the 1st Supplement published in November 2025. The Supplement addresses numerous significant legislative changes since publication of the 13th edition, including the groundbreaking Legislation (Procedure, Publication and Repeals) (Wales) Act 2025 asc. 3 - a landmark piece of legislation that formalises procedures for making and publishing Welsh legislation while improving the accessibility of Welsh law.