The Investigatory Powers Tribunal

Who we are

Tribunal members

Lady Carmichael (President)

Lady Carmichael was appointed to the Tribunal on 6 November 2019, and was appointed President on 1 November 2025. She has been a Senator of the College of Justice (judge in the Supreme Courts of Scotland) since 2016 , and in 2025 was appointed to the Inner House (the appeal court in Scotland).She is a graduate of the University of Glasgow and called to the Bar in 1993, taking silk in 2008. In practice, she specialised in public and administrative law. She served as standing Junior Counsel to the Home Department between 2000 and 2008. She acted as counsel to the Fingerprint Inquiry Scotland. She was appointed as a legal member of the Mental Health Tribunal for Scotland in 2005; a part-time sheriff in 2007; and a Deputy Judge of the Upper Tribunal (Administrative Appeals Chamber) in 2014.

Mrs Justice Farbey (Vice-President)

Mrs Justice (Judith) Farbey was appointed to the Tribunal in 2023 and appointed as Vice-President on 11 May 2026. She was called to the Bar (Middle Temple) in 1992. She was appointed as a QC in 2011, a Deputy Judge of the Upper Tribunal Administrative Appeals Chamber in 2014, a Recorder in 2016 and a High Court Judge assigned to the Queen’s Bench Division (now the King’s Bench Division) in 2018. From 2019 to 2022, she was the President of the Administrative Appeals Chamber.

Mrs Justice Lieven

Mrs Justice Lieven was appointed to the Tribunal in 2019. She was Called to the Bar in 1989 and took Silk in 2006. She was appointed as a Deputy High Court Judge in 2016 and took up appointment as a High Court Judge on 11 January 2019 assigned to the Family Division. Mrs Justice Lieven also sits in the Administrative Court.

Mr Justice Chamberlain

Mr Justice (Martin) Chamberlain was appointed to the Tribunal in 2022. He was called to the Bar (Middle Temple) in 1997. He specialised in public law, human rights and EU and international law. Mr Justice Chamberlain was a member of the Attorney General’s panels of counsel and acted for and against the Crown and other public bodies. He served as a Special Advocate in national security proceedings and was appointed a KC in 2013 and a Deputy High Court Judge in 2016. He was also Chair of the Constitutional and Administrative Law Bar Association. He was appointed a High Court Judge in October 2019.

Mr Justice (Jeremy) Johnson

Mr Justice (Jeremy) Johnson was appointed to the Tribunal in 2023. He was called to the Bar (Middle Temple) in 1994. He specialised in public law and common law, often acting in cases involving the police and government departments. He was a member of the Attorney General’s Panel of Counsel to the Crown and a Special Advocate.  He took silk in 2011. He was appointed as a Recorder in 2009 and authorised to sit as a Deputy High Court Judge sitting in the Queen’s Bench Division (now the King’s Bench Division) in 2016 and in the Administrative Court in 2018.

Judge Rupert Jones

Judge Rupert Jones was appointed to the Tribunal in 2022. He is a salaried Judge of the Upper Tribunal in the United Kingdom. He was called to the Bar of England and Wales in 2000 and was a member of the Attorney General’s Panel of Counsel. He specialised in the proceeds of crime, indirect tax and public law including national security cases. He was appointed as the Attorney General and Director of Public Prosecutions of Anguilla in 2014. He was appointed as fee paid judge of the First-Tier Tribunal (Tax Chamber) in 2015 and a salaried Judge of the Upper Tribunal assigned to the Administrative Appeals Chamber in 2018. He was assigned to the Upper Tribunal (Tax and Chancery Chamber) in 2020. In 2022 he was authorised to sit as a Judge of the High Court (Queen’s Bench Division). In the same year he was appointed the Chief Justice of St Helena, Ascension Island and Tristan Da Cunha, a position he held until 1 April 2026. He is a co-author and co-editor of Millington and Sutherland Williams on the Proceeds of Crime and was co-editor of the first edition of National Security: Law, Procedure and Practice published by Oxford University Press.

Stephen Shaw KC

Stephen Shaw KC was appointed to the Tribunal in 2022. He was called to the bar of Northern Ireland in 1980 and took silk in 2001. He sits as a temporary High Court Judge in Belfast. He has specialised in commercial, chancery and public law. He has wide experience of strategic advice as well as litigation, arbitration, and mediation.

Annabel Darlow KC

Annabel Darlow KC was appointed to the Tribunal in 2022. She was called to the Bar in 1993 (Middle Temple) and took silk in 2015. She practises from 21 College Hill, primarily in criminal law with a particular emphasis on serious and complex crime, including homicide, terrorism and fraud and also undertakes public law work. She was appointed as a Recorder of the Crown Court in 2009 and authorised to sit as a Deputy High Court Judge (KBD) in 2022. She is an accredited Mediator in civil and commercial law.

Francesca Del Mese

Francesca Del Mese was appointed to the Tribunal in 2022. She was called to the Bar in 1998. She is now an international criminal and human rights lawyer. She has held many positions, both in the UK and overseas, including the Senior Strategy Advisor on counter-terrorism with the UN Assistant Secretary General in the UN Department of Peacekeeping Operations New York, the Justice Advisor for the UK government in Pakistan, and the UK’s Counter-Terrorism Prosecutions Advisor in Ghana. She is a former Commissioner for the Independent Commission for Aid Impact, and has led a number of independent evaluations and inquiries for the UN. In 2011 she was the Legal Advisor to the UN Mission of Inquiry into Atrocities Committed in Syria. Francesca was appointed a Recorder in 2019 and also chairs panels into serious police misconduct.  She was appointed to the Tribunal in 2022.

David Pittaway KC

David Pittaway KC was appointed to the Tribunal in 2025. He was called to the Bar (Inner Temple) in 1977. In practice, he specialised in public inquiries, inquests, clinical negligence, and regulatory and disciplinary law. He was appointed an Assistant Recorder in1998, Recorder in 2000, QC in 2000, and Deputy High Court Judge (QBD) in 2008 and (Admin) in 2012. He was Treasurer of the Inner Temple in 2017. He was Chair of the Professional Negligence Bar Association. He is a Fellow of the Chartered Institute of Arbitrators and an Accredited Mediator.

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