Siân McGibbon

Practice Areas

Siân’s specialist public law practice spans all aspects of administrative and human rights, as well as related areas of planning, environmental, and international law. She has extensive experience working as sole counsel and as part of a team, including experience of acting unled before the Court of Appeal, and has been involved in a number of landmark cases raising novel and significant public law issues. She has been consistently ranked for administrative and human rights law as a ‘rising star’ in Legal 500 and as an ‘up and coming’ junior in Chambers and Partners; directory testimonials recognise her as “an amazing junior” who is “excellent at using public law principles to craft a winning strategy in difficult cases”. She is highly sought after in public law litigation by both claimants and public bodies alike.

Siân is direct access qualified and accepts instructions on this basis in appropriate cases across all her practice areas.

Before coming to the Bar, Siân studied law at Oxford University and worked for the Ministry of Justice as judicial assistant to Lord Hamblen. Beyond her practice she maintains a strong academic interest in public law. She is assistant editor of the Judicial Review journal, and is a doctoral researcher and graduate lecturer in constitutional and administrative law at University College London.