Jack Williams appears in Supreme Court in constitutional blockbuster

14 Oct 2025

Jack Williams is appearing in the Supreme Court between Tuesday 14th October and Thursday 16th October 2025 in Dillon v Secretary of State for Northern Ireland. Jack acts for the lead respondents / cross-appellants (Dillon et al),and is led by John Larkin KC and Jude Bunting KC.

The case concerns the compatibility of the Northern Ireland (Legacy and Reconciliation) Act 2023 with the non-diminution guarantee in Article 2 of the Windsor Framework (formerly the Northern Ireland Protocol). The Act brought to an end Troubles-related inquests, new civil claims, Police Ombudsman and police investigations.

The case will establish the meaning and effect of Article 2, as well as the role of the EU Charter of Fundamental Rights in domestic law post Brexit, and the circumstances in which Acts of Parliament can be disapplied for incompatibility with the UK-EU Withdrawal Agreement (and Windsor Framework).

Jack and other members of Chambers will be speaking about some of these topics next week in a UK-EU Withdrawal Agreement Masterclass Webinar. More information and sign up details are available here.

Search