On 29 April 2021 the National Security and Investment Act 2021 (NSIA) received Royal Assent. When it comes into force fully on 4 January 2022, it will permit the government wide ranging powers to impose remedies on, or even block, certain transactions on the basis of national security. Whilst most relevant in an M&A context, the legislation does introduce a number of implications for financing transactions which are discussed below.