These Regulations bring into force on 28th October 2019 section 11(3) of the Mental Health Units (Use of Force) Act 2018, which requires the Secretary of State to consult prior to publishing guidance under section 11(1) about functions under that Act.
Link: The Mental Health Units (Use of Force) Act 2018 Commencement (No. 1) Regulations 2019
Source: Legislation .gov.uk