On 15 September 2025, The Markets in Financial Instruments (Miscellaneous Amendments) Regulations 2025 were made together with an explanatory memorandum.

Using the powers established by the Financial Services and Markets Act 2023, this statutory instrument (SI) retains the key definitions within Commission Delegated Regulation (EU) 2017/565, otherwise known as the MiFID Org Reg, in domestic financial services legislation. A subsequent commencement SI will be made to revoke the MiFID Org Reg and bring into force this SI. HM Treasury will do this in co-ordination with the Financial Conduct Authority and Prudential Regulatory Authority implementing rules to replace the firm-facing provisions from the MiFID Org Reg.