President: Lady Simler
Lady Simler, Justice of the Supreme Court, was appointed as President of the Institute on 15th October 2025.
Lady Simler was called to the Bar by Inner Temple in 1987, having read law at Cambridge University, and completed a post-graduate diploma in EU law at the Europa Institute, University of Amsterdam. She practised at the Bar at Devereux Chambers where she became Head of Chambers before becoming a judge. During her time at Devereux she was a member of the Attorney General's Civil Panel A and was Junior Counsel to the Inland Revenue (Common Law) between 2002 and her appointment to silk in 2006.
She became a Judge of the High Court King's Bench Division in October 2013. In January 2015 she was appointed President of the Employment Appeal Tribunal for a three-year term which ended on 31 December 2018.
Having served as High Court Liaison Judge for Diversity she was appointed chair of the Diversity Committee of the Judges' Council in 2019. She also served as a member of the Civil Executive Team chaired by the Deputy Head of Civil Justice, reporting to the Master of the Rolls. She was sworn in as a Lady Justice of the Court of Appeal in June 2019. She was appointed as a Justice of the Supreme Court in November 2023.