Which legislation allowed the UK to transition EU sanction regimes into UK law after leaving the EU?

The Sanctions and Anti-Money Laundering Act was pivotal in enabling the UK to transition EU sanction regimes into its domestic law following Brexit. This legislation provided the necessary framework for the UK government to impose sanctions independently of the European Union, allowing for continuity in the enforcement of sanctions while also permitting updates or modifications to reflect the UK's foreign policy objectives and national interests.

This Act empowers the UK government to establish, implement, and enforce sanctions against individuals, entities, and countries. It consolidates existing measures and enhances the UK's ability to combat money laundering and terrorist financing while ensuring that the sanctions align with the UK's international commitments.

The other options, while relevant to financial regulations and the UK's legal landscape, do not specifically address the transition of EU sanctions into UK law after leaving the EU. The Financial Services Act 2012 primarily focuses on the regulation of financial services rather than sanctions. The Payment Services Directive pertains to payment services and is related to market competition and consumer protection rather than sanctions law. The UK Withdrawal Act primarily deals with the legal framework for the UK's departure from the EU but does not directly govern the implementation of sanctions.