The UK Prudential Regulation Authority (PRA) has finalized new operational resilience rules that will take effect in March 2027. The new rules require firms to report significant operational incidents and notify regulators of important third-party arrangements (MTP). This final policy was developed jointly by the PRA with the Financial Conduct Authority (FCA) and the Bank of England, streamlining the reporting process by consolidating three event reports into a single form and exempting credit unions with assets below £50 million from MTP notification requirements to reduce their burden. These rules aim to strengthen regulatory oversight of operational disruptions and third-party dependency risks, and align with international standards such as the EU's DORA and the Financial Stability Board (FSB)'s FIRE framework.