Court of Protection & capacity — when a parent has mental health or capacity issues

REVIEWED BY: Sean McNamara on 2026-08-28

When capacity questions touch a family case

A parent's mental capacity (or a child's, or an older relative's) can pull family proceedings toward the Court of Protection. This page explains the boundary in plain terms and the safeguarding duties that follow.

The two key concepts

Capacity — per the Mental Capacity Act 2005, whether someone can make a specific decision (understand, retain, weigh, communicate). It's decision-specific ("can they decide where to live?"), not global, and presumed unless proved otherwise
Best interests — if someone lacks capacity for a decision, decisions are made in their best interests via the correct route (consultee, IMCA, or the Court of Protection)

When it touches family proceedings

A parent who abuses substances/illness may need an assessment; the family court can direct a capacity-based parenting assessment, appoint an Independent Social Worker, or adjourn for treatment (see our substance guide and stays guide)
An elderly relative's finances/property — if a family member holds an LPA (Lasting Power of Attorney) and is abusing it, the Court of Protection can suspend/remove the attorney (see our abuse-of-older-people guide)
A child with complex needs — capacity for a 16/17-year-old, or involvement of the Court of Protection where a young adult cannot decide their own welfare

Practical safeguarding

The family court has inherent jurisdiction to protect a vulnerable adult even where capacity is borderline (its own protective power)
Applications to the Court of Protection (COP) follow specific forms; COP protects the person, not "the case"

Getting help

Adults who lack capacity are entitled to an IMCA (Independent Mental Capacity Advocate) in some decisions — the local authority or the decision-maker must consider instructing one
MIND / Rethink for mental-health support; Age UK / Hourglass for older-relative safeguarding (see our guides)

Official links

Mental Capacity Act: https://www.gov.uk/mental-capacity-act-2005
Court of Protection: https://www.gov.uk/courts-tribunals/court-of-protection

This page is general information, not legal advice. YourFamilyCase.co.uk is an independent information directory and is not affiliated with the Court of Protection or gov.uk.

Content verified against the official HMCTS court directory, gov.uk forms and fees pages, and the professional body registers (SRA, FMC, Bar Council). Last reviewed September 2026.