Mental Health Bill becomes law: What you need to know

Credit: iStock.com/ sturti

By Claudia Tanner

Outdated mental health legislation has finally been overhauled after nearly a decade of calls for reform. Here's what's changing and why it matters for your clinical practice.

What's happened?

The Mental Health Bill received Royal Assent on 18th December 2025, replacing the Mental Health Act 1983. It applies to England and Wales. Health secretary Wes Streeting described it as "a watershed moment for mental health care" that will give patients more rights over their care and "transform lives by putting patients back in control" after "years of neglect" of vulnerable people in crisis.

The government states the reforms will support NHS staff to provide more personalised care for those who need it.

Why was reform needed?

The 1983 Act, which provides the legal framework for detaining and treating people in mental health crises, had become unfit for purpose. Lack of patient autonomy meant those detained under the Act had minimal say over their care and treatment decisions. Racial inequality persisted, with Black patients detained at 3.5 times the rate of White patients. Inappropriate detention saw autistic people and those with learning disabilities often detained despite not having mental health conditions requiring such intervention. Perhaps most concerning was the use of prison as "place of safety", where courts could detain people in prison cells whilst awaiting hospital beds—an approach widely condemned as inhumane.