Jurisdiction(s):
United Kingdom

Deciding between the Mental Health Act 1983 and Mental Capacity Act 2005 for admission, treatment, deprivation of liberty (DOLS) and community powers in England and Wales

Published by a LexisNexis Local Government expert

Practice notes

In England and Wales, non-consensual care and treatment for individuals with a mental disorder sit within two parallel legal frameworks: the Mental Health Act 1983 (MeHA 1983) and the Mental Capacity Act 2005 (MCA 2005). Their provisions frequently intersect, and navigating their interplay can be highly intricate. This Practice Note considers four key points at which the Acts meet:

inpatient care and treatment
informal admission
deprivation of liberty in hospital
community powers of MeHA 1983

While MeHA 1983 has no lower age threshold, MCA 2005 applies only from age 16. Accordingly, the interface arises solely for those aged 16 and above. This Note does not cover the position of children under 16. For guidance on deprivation of liberty concerning children, see Practice Notes: Children, deprivation of liberty and the inherent jurisdiction and Children, consent and deprivation of liberty.

The scope of the Mental Health Act 1983 and the Mental Capacity Act 2005

In broad outline, MeHA 1983 chiefly provides for the detention and treatment of people in hospital for mental disorder, grounded in the protection of the individual and the wider public...

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Tim Spencer-Lane

Tim is a lawyer who specialises in mental capacity, mental health and social care law. At the Law Commission he led the reviews of the deprivation of liberty safeguards, health and social care professional regulation, and adult social care. He now works for the Government Legal Department (Department of Health and Social Care) where he advises on mental capacity and mental health law. Tim is the author of the /Care Act Manual/ (third edition 2019, Sweet and Maxwell) and co-author of /the Approved Mental Health Professional Practice Handbook/ (2020, Policy Press). He is also a General Editor of the Encyclopedia of Social Services and Child Care Law, a contributor to Cross on Local Government and legal editor of Community Care Inform. Tim also is a guest lecturer at Kingston University where he teaches on the best interests assessor, and adult...

Web page updated on 21/05/2026

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