Professor Marshall is a Law Professor researching the role law plays in creating, allowing, representing and protecting personal identity and freedom with emphasis on law's purpose, design and structure to enable a life well-lived. The research is jurisprudential, informed by feminist legal theory. She analyses aspects of International law, global, social, racial and gender (in)justice, and human rights in their complexities of real life situations, particularly in women's lives.

She currently teaches International human rights law, jurisprudence/philosophy of law, and the English Legal System.

She has experience as an International litigation solicitor at top global law firms before she entered academia. She retains her practising certificate and has worked as an ad hoc consultant at an award winning human rights and social justice law firm based in central London.

Professor Marshall has given expert opinion by invitation to the Equal Opportunities Committee of the Parliamentary Assembly of the Council of Europe on Islamophobia, with emphasis on the Islamic headscarf debate on which she has written widely. Her opinion was endorsed by the Chair of that Committee in the Chair’s Report.  She more recently debated these issues with judges of the European Court of Human Rights in collaboration with Leicester Law School and the University of Strasbourg as part of the Feminist Judgments project in 2024. She has worked with a variety of consultation processes and non-governmental organisations and bodies on equalities related issues on CEDAW reporting, women's international rights to health, legal history, and women's human rights in Afghanistan. She has given public lectures on related research. 

Professor Marshall is the founding author, module convenor and chief examiner for the University of London International Programmes at Masters level for the Human Rights of Women, and at undergraduate convenes Jurisprudence. She has been visiting scholar at numerous institutions globally including the University of Ibagué in Colombia and the University of Bergen, Norway where she gave public lectures by invitation.  

She has been interviewed by the media on areas relating to her research and is the creative founder of the Legal Ideas Factory: www.legalideasfactory.com.

Current research projects include:

1. Gender, Equality, and Human Rights Law (Edward Elgar under contract) including:

    - Rape and pregnant girls, rape and 'father's rights', teenage grooming, secrecy and privacy in pregnancy and childbirth, in peace and in conflict. As part of this, Jill is also investigating the use of, and human rights implications of, ‘deposit boxes’ usually in the side of hospitals where babies can be left safely but anonymously in many European, and other, countries.

- Feminist jurisprudence and structural social conditions of inequality. 

- Identity and autonomy rights: including how women’s clothing, such as the Islamic headscarf and full face veil, and so called ‘provocative’ or ‘sexy’ clothing, is regulated, and the impact that may have on women’s ability to live freely.

- Deepfakes, women's rights in the metaverse and virtual reality.

2. Everyday spaces and law with a focus on Georges Perec's Species of Spaces. 

3. Analysis of US Black literature and justice. 

LLB (Queen's, Belfast)

MA (University College London)

PhD (London)

Law Society Finals

Admitted as a Solicitor of the Supreme Court of England and Wales 1992, practising certificate current