14 June 2022 Mattia Di Ubaldo is a Fellow of the UK Trade Policy Observatory and a Research Fellow in Economics at the University of Sussex Business School. Michael Gasiorek is Director of the UK Trade Policy Observatory and Professor of Economics at the University of Sussex Business School. The UK Government has published its bill on the Northern Ireland Protocol (NIP), making a clear move to try to force changes in the arrangements disciplining the economic regime applying to the portion of the UK that has remained in the EU Single Market post-Brexit. The points of strongest contention between the UK Government and the EU concern the custom and regulatory checks applying to trade flowing from Great Britain to Northern Ireland together with a list of additional issues resulting from Northern Ireland remaining part of the EU Single Market territory: the regulatory regime applying to firms in Northern Ireland, rules on VAT, the use of state subsidies, and the role of the European Court of Justice in overseeing the NIP. […]