• Sexuality, Morals and Justice (London, Cassell, 1997)
• Public Law in a Multi-layered Constitution (ed. with P. Leyland, Oxford, Hart, 2003).

Working on textbooks for Oxford University Press (human rights law) and Thomson/Sweet & Maxwell (comparative UK/European anti-discrimination law; co-authors G.Bindman & M.Malik) and on a monograph for Hart Publishing on property and the public law-private law distinction.

He was editor of Sex Rights, the 2002 series of Oxford Amnesty Lectures concerning human rights, gender and sexuality (Oxford University Press, 2004).

Nicholas was recently elected to the office of Junior Proctor of Oxford University, a post he will hold for a year. He is also a non-executive director of Hadfield Enteprises Limited run by former Christ Church student, Gavin Hadfield, the noted philanthropist and industrialist.