Mental Health Act 1983

The principal statute governing the compulsory detention and treatment of persons with mental disorder in England and Wales. It provides for compulsory admission to hospital for assessment and treatment, gives police specific powers to remove persons to a place of safety, and establishes the legal framework for guardianship, community treatment orders, and mental health review tribunals.

Key Provisions

• Section 2: compulsory admission for assessment (up to 28 days)
• Section 3: compulsory admission for treatment (up to 6 months, renewable)
• Section 4: emergency admission for assessment (up to 72 hours)
• Section 5(2): doctor's holding power (up to 72 hours)
• Section 5(4): nurse's holding power (up to 6 hours)
• Section 17A: community treatment order
• Section 135: warrant to enter premises to remove mentally disordered person
• Section 136: power to remove person from public place to a place of safety
• Section 136A (added 2017): power to remove person from private premises
• Section 37: hospital order following conviction
• Section 41: restriction order (Crown Court only)

Relevance to Policing

Essential for understanding police powers relating to mental health crises, the section 136 pathway, compulsory admission powers, and the appropriate adult requirement for mentally vulnerable detainees.