The Financial Conduct Authority (FCA) and HM Treasury are reforming the UK alternative investment fund managers (AIFM) regime, which is largely derived from the Alternative Investment Fund Managers Directive (Directive 2011/61/EU) (AIFMD). The stated aim is to make the regime more proportionate and simplified, supporting growth in a sector in which UK asset managers oversee £1.8 trillion in alternative assets, while maintaining investor protection and market integrity. This Practice Note considers the proposed changes to the scope and authorisation of AIFMs, AIFM categorisation and the principal operational requirements, including valuation, leverage, liquidity risk management, delegation, investor disclosures and marketing. It also covers related reforms to reporting and remuneration, future proposals on depositaries, prime brokers, prudential requirements and authorised alternative investment funds (AIFs), and the expected implementation timetable. Key points • on 14 July 2026, HM Treasury and the FCA published a co-ordinated package of proposals to reform the UK AIFM regime. This included a draft statutory instrument (SI) that, if implemented, would establish a revised legislative framework for the regulation of managers of AIFs • HM Treasury’s proposals address the