"Lawyers and the Rule of Law" (with ,,), Handbook on the Rule of Law (Elgar, 2018)

"Does Law Wear Out?" (with ,,), Engineering a Better Future Interplay between Engineering, Social Sciences and Innovation (Springer, 2018)

"Of Power Cables and Bridges: Individual Rights and Retrospectivity in Miller and Beyond " (with ,,), The UK Constitution After Miller Brexit and Beyond. (Hart, 2018)

" Socio-economic analysis of the EU Common approach on liability rules and insurance related to connected and autonomous vehicles " (with C. Rohr, F. Dunkerley), A Common EU Approach to Liability Rules and Insurance for Connected and Autonomous Vehicles European Added Value Assessment Accompanying the European Parliament's Legislative Own-initiative Report (European Parliament, 2018)

"Is the Lex Parliamentaria Really Law? The House of Commons as a Legal System" (with None ), Essays on the History of Parliamentary Procedure (Hart, 2017), pp. 311-322

"Removing precariousness: a conceptual note" (with None), Approches franco-britanniques de la précarité (LGDJ, 2016), pp. 161-169

"The Politics of Public Law", Cambridge Companion to Public Law (Cambridge University Press, 2015), pp. 37-55

"Lawyers in the House of Commons" (with David Feldman), Law in Politics, Politics in Law (Hart, 2013), pp. 41-64

"The House of Lords: Central Policy Issues" (with A. Fitzpatrick), The End of the Peer Show? (Constitution Society, 2011), pp. 99-108

"Intentional Torts" (with C. Sappideen and P. Vines), Fleming's Law of Torts (Thomson-Reuters, 2011), pp. 23-48

"Defences to the Intentional Torts" (with C. Sappideen and P. Vines), Fleming's Law of Torts (Thomson-Reuters, 2011), pp. 87-115

"The General Conditions of Unlawfulness" (with A. Hartkamp, M. Hesselink, E. Hondius, C.Mak and C.E. du Perron), Towards a European Civil Code 4th edition (revised and expanded) (Wolters Kluwer/ Ars Aequi Libri, Alphen aan den Rijn, 2010), pp. 845-885

"What is Social Liberalism?" (with D. Brack, R. Grayson and D. Howarth), Reinventing the State (Politico's, London, 2007)

"The Duty of Care" (with K Oliphant et al), Law of Tort (Butterworths Common Law Series) (Butterworths, 2007)

"'Economic Concepts: Markets and Prosperity', 'Economic Concepts: Welfare State', Rationality', 'Hobhouse', 'Rawls', and 'Weber'" (with D Brack and E Randall), Dictionary of Liberal Thought (Politico's Publishing Ltd, 2007)

"Energy: A sustainable non-nuclear future" (with D. Astle et al), Britain after Blair (Profile Books Ltd, 2006)

"The General Conditions of Unlawfulness" (with A Hartkamp et al), Towards a European Civil Code (Kluwer, The Hague, 2004)

"Profits from Breach of Contract" (with S Hedley and M Halliwell), The Law of Restitution (Butterworths Common Law Series, 2002) (Butterworths, 2002), pp. 207-230

"Restitution for Torts and Miscellaneous Other Wrongs" (with S Hedley and M Halliwell), The Law of Restitution (Butterworths Common Law Series, 2002) (Butterworths, 2002), pp. 231-272

"General Defences" (with A Grubb), The Law of Tort (Butterworths Common Law Series, 2001) (Butterworths, 2001), pp. 145-185

"The Duty of Care" (with A Grubb), The Law of Tort (Butterworths Common Law Series, 2001) (Butterworths, 2001), pp. 503-587

"The General Conditions of Unlawfulness" (with Hartkamp, Heeselink, Hondius et al), Towards a European Civil Code II (Kluwer Law International, 1998), pp. 397-431

"Is there a future for the intentional torts?" (with P Birks), The Classification of Obligations (OUP, 1997), pp. 233-282

"Economic Loss in England: The search for coherence" (with E Banakas), Civil Liability for Pure Economic Loss (Kluwer, 1996), pp. 27-54

"Making Sense Out of Nonsense" (with Gross and Harrison), Jurisprudence: Cambridge Essays (OUP, 1992)