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Jill Peay

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About the author and department

Personal webpage:

Law Department:

Relevant research

Peay, Jill (2015) Mental incapacity and criminal liability: redrawing the fault lines? International Journal of Law and Psychiatry, 40. pp. 25-35.

Peay, Jill (2013) Mental disorder and imprisonment: understanding an intractable problem? In: Dockley , Anita and Loader , Ian , (eds.) The Penal Landscape: the Howard League Guide to Criminal Justice in England and Wales. Routledge, Abingdon, UK, pp. 133-149.

Peay, Jill (2012) Fitness to plead and core competencies: problems and possibilities. Law working papers, WPS 02-2012. Department of Law, London School of Economics and Political Science, London, UK.

Peay, Jill (2012) Insanity and automatism: questions from and about the Law Commission's scoping paper. Criminal Law Review (12). pp. 927-945.

Peay, Jill (2011) Personality disorder and the law: some awkward questions. Philosophy, Psychiatry and Psychology, 18 (3). pp. 231-244.

Peay, Jill (2010) Civil admission following a finding of unfitness to plead. In: McSherry, Bernadette and Weller, Penelope , (eds.) Rethinking Rights-Based Mental Health Laws. Hart Publishing, pp. 231-254.

Evidence of impact


‘Is ‘Unfitness to Plead’ Fit for Purpose?’  Public Lecture, Kings College London, Centre for Medical Law and Ethics: Lent Lecture Series on Psychiatry, Law and Ethics  5 February 2009.

‘Fitness to Plead: Problems and Possibilities’ Plenary to Northern Ireland Criminal Bar Annual Conference in Belfast.  Theme: Mental Health and Criminal Responsibility, 4 June 2011.

Citation by the Law Commission

The emerging work was cited in the following documents of the Law Commission (references to Peay or to the work of Dr Blackwood and his colleagues):

Consultation Paper No 197, Unfitness to Plead: A Consultation Paper, 2010, see pp 12, 103-4:  

[Note: An ‘easy-read’ version of the consultation paper, which provides an excellent summary of the issues, is available at: ]

Unfitness to Plead: Consultation Responses, 10 April 2013, see responses from Kids Company (p.17), the Law Reform Committee of the Bar Council and the Criminal Bar Association of England and Wales (p.7), Nottingham Healthcare NHS Trust (p.3), Prison Reform Trust (p.4), Royal College of Psychiatrists (p.18), and Centre of Medical Law & Ethics, School of Law, King’s College London (p.1):

Unfitness to Plead: Analysis of Responses, 10 April 2013, see pp 1, 35, 40, 42, 74:

Unfitness to Plead: An Issues Paper, 2 May 2014, see pp 31, 41, 42, 43, 46:

Unfitness to Plead Symposium at Leeds University School of Law, 11 June 2014, where Nigel Blackwood presented the project’s findings:

Current status of the Unfitness to Plead Project of the Law Commission is available at:

Relevant video and audio

Gearty Grilling with Jill Peay on ‘Mental health in prisons’, 4 December 2014:

‘Imprisoning the mentally disordered: a manifest injustice?’, LSE event, 16 December 2013:

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