The National Security Investment Act 2021 (the “Act”) came into effect on 4 January 2022 and introduced a new UK investment screening regime focused on national security risks (the “NSI Regime”). It is similar to the Committee on Foreign Investment in the United States (“CFIUS”) regime. The Act is wide reaching; it provides the UK government with the power to review and intervene in transactions that may pose a UK national security risk due to a transfer of control of sensitive entities or assets.

The judgment in the case of Belmont Park Investments Pty Limited v BNY Corporate Trustee Services Limited and Lehman Brothers Special Financing Inc (UKSC 2009/0222), which began to be heard by the UK Supreme Court on March 1, 2011,1 was handed down on July 27, 2011. The case concerns the enforceability of so-called “flip clauses,” which provide that payment obligations owed to different creditors, in this case the swap counterparty and the noteholders, “flip” in priority following a counterparty bankruptcy.