The Brexit process raised questions about how – and in what areas – the royal prerogative should operate. Following a lengthy project, which has resulted in a new book on the subject and a Unit report – published today – on options for reform, Robert Hazell explains why the prerogative matters, and how it might be reformed to strike a better balance between parliament and the executive.

The royal prerogative has long been a mystery to most observers. I have now produced a book Executive Power: The Prerogative, Past, Present and Future to help demystify it. It was written with my former researcher (now a barrister) Tim Foot, and covers the whole range of prerogative powers, from going to war and ratifying treaties, appointing and dismissing ministers, regulating the civil service and public appointments, to the grant of honours and pardons and the issue of passports. The book’s 19 chapters provide a comprehensive guide to the operation of the prerogative – past, present, and future – together with suggestions for reform.

Working with us was another researcher, Charlotte Sayers-Carter, and Charlotte and I have distilled the key findings of our book into a much shorter report, Reforming the Prerogative. It selects just five powers, to illustrate the scope for reform through codification in statute, soft law, or by clearer and stronger conventions. This blog offers edited highlights from the book and the report, to explain why the prerogative matters; to illustrate this with a few prerogative powers; and to suggest ways in which it might be reformed.

What is the prerogative?

The prerogative derives from the original executive powers of the Crown. Over the years these have been overlain and superseded by statute, and most powers have transferred to ministers. The monarch retains the power to summon, dissolve and prorogue parliament; to grant royal assent to bills passed by parliament; to appoint and dismiss ministers. The main prerogative powers in the hands of ministers are the power to make war and deploy the armed forces; to make and ratify treaties; to conduct diplomacy and foreign relations; to grant peerages and honours; to grant pardons; to issue and revoke passports.