Principles of Contractual Interpretation, 3rd Edition by Richard Calnan | 2026*

Principles of Contractual Interpretation, 3rd Edition by Richard Calnan | 2026*

Designed for busy practitioners, Principles of Contractual Interpretation provides a clear and authoritative overview of this complex area of commercial law. The authors simplify the rules governing contract construction and interpretation into ten key principles, each discussed in a dedicated chapter and supported by case law demonstrating their practical application.

Now in its third edition, the book has been extensively updated to incorporate eight years of developments in case law, including significant decisions such as Wells v Devani, Tesco v USDAW, Barton v Morris, Tinkler v HMRC, and FSHC Group Holdings Ltd v Glas Trust Corporation Ltd. It also introduces new discussions on the enforceability of implied terms, the limits of rectification, purposive interpretation, and the significance of good faith and entire agreement clauses.

With its expanded scope and refreshed analysis, this edition continues to be an essential reference for lawyers, judges, and anyone engaged in drafting or litigating commercial contracts.

Key Features of Principles of Contractual Interpretation, 3rd Edition by Richard Calnan:

• Offers clear and succinct guidance on how to approach issues of interpretation in commercial contracts
• Identifies ten fundamental principles of contractual interpretation, with explanation of their practical application
• Examines related doctrines such as implied terms, rectification, and estoppel by convention

New to this Edition:

• Incorporates eight years of developments in case law, with comprehensive revisions across all chapters
• Considers leading decisions from UK courts and across the wider Commonwealth, including Wells v Devani, Tesco v USDAW, Barton v Morris, FSHC Group Holdings Ltd v Glas Trust Corporation Ltd, and Tinkler v HMRC

• Provides expanded analysis and updated case law on implied terms and rectification

Table of Contents of Principles of Contractual Interpretation, 3rd Edition by Richard Calnan:

Prologue
I. The Guiding Principle
1:Principle 1: Objective Intention

II .Text and Context
2:Principle 2: The Text
3:Principle 3: The Whole Text
4:Principle 4: The Context

III. Understanding Words
5:Principle 5: Natural Meaning
6:Principle 6: Ambiguity
7:Principle 7: Unnatural Meaning

IV Adding Words
8:Principle 8: Implied Terms

V Changing Words
9:Principle 9: Rectification
10:Principle 10: Estoppel by Convention
Epilogue, Principles of Drafting, An Interpretation Clause

About the Authors:

Richard Calnan is a partner at Norton Rose Fulbright LLP in London and serves as an Honorary Professor at University College London. His work covers a wide spectrum of corporate and financial transactions, as well as restructurings and insolvency matters. He is also a prolific author, having contributed numerous books, articles, and chapters on commercial law, including Proprietary Rights and Insolvency (2nd edn, OUP 2016) and Principles of Statutory Interpretation (OUP 2023).

Paul S. Davies is a Professor of Commercial Law at University College London and a barrister at Essex Court Chambers. He was formerly a Fellow at Gonville and Caius College, University of Cambridge, and St Catherine's College, University of Oxford, and has also worked at Law Commission. In 2020, he received the Philip Leverhulme Prize in Law, which honours exceptional researchers whose work has gained international recognition and who show outstanding promise for future achievement.

Find more books like Principles of Contractual Interpretation, 3rd Edition by Richard Calnan: Contract Law