On 14 May 2025, the rulebook for UK landlords is being rewritten. New anti-money laundering (AML ) and sanctions regulations will come into force, representing the most significant compliance shift in a decade. This isn’t just another piece of red tape; it’s a fundamental change that exposes every landlord and letting agent to unlimited fines and even prison sentences for getting it wrong. Forget the old rules. The days of AML checks only applying to high-value Mayfair rental