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Educational draft · awaiting clinical reviewUse Rapid for revision, not patient-care decisions. Check current national and local guidance and the BNF or BNFC before acting.

Best-interests decision-making and least restriction

Psychiatry · UK scope · Sources checked 27 Aug 2026 · Clinical review pending

RapidFull
!
Immediate treatment before full consultation

Serious deterioration may make delay unsafe, but emergency best-interests action must remain necessary, proportionate and compatible with any known valid refusal or court decision.

Action: Search rapidly for advance decisions and authorised proxies, involve the person as far as possible and provide only treatment needed to prevent serious harm while wider evidence is gathered. Document urgency, alternatives, restraint and review, and seek immediate senior or legal advice for disputed life-sustaining treatment or uncertain authority.

Synopsis

Make transparent, lawful decisions when a person cannot decide, first respecting valid prior authority, then centring wishes, values, clinical options, consultation and the least restrictive effective course under the correct UK jurisdiction.

  • Confirm that capacity is absent for the specific decision after practicable support and consider whether the choice can wait for recovery.
  • Check first for a valid applicable advance refusal, health-and-welfare attorney, deputy, guardian or court order and verify the exact scope of authority.
  • In England and Wales, encourage participation and consider all relevant circumstances, present and past wishes, values, beliefs and the views of appropriate people.
  • Compare each clinically available option, including no treatment or delay, for benefits, burdens, reversibility, rights, relationships and likely effect on what matters to the person.
  • Family and friends are evidence about the person, not automatic substitute decision makers; record agreement, disagreement and possible conflicts of interest.
  • Choose the less restrictive effective option and explain why a more restrictive choice is necessary if selected.
  • Following the 2026 UK Supreme Court decision, assess Article 5 consent to confinement separately from domestic decision-making capacity, including current wishes, feelings and basic understanding; do not cancel safeguards when consent is absent or unclear.
  • Arrange an Independent Mental Capacity Advocate in England and Wales when statutory criteria apply, including specified serious decisions for an unbefriended person.
  • Use court or specialist legal review for unresolved serious conflict, uncertain advance refusal, sterilisation, organ donation, prolonged restraint or other exceptional questions.
  • Set a review point because prognosis, options, capacity, wishes and the proportionality of restrictions can change.

Key red flags

A valid and applicable advance decision refusing treatment in England and Wales is binding and cannot be replaced by a clinician's or family's view of best interests.

Property-and-finance authority, ordinary next-of-kin status or family seniority does not create health-and-welfare decision power.

Best interests is not a vote, clinical convenience, bed-management decision or assumption based on age, disability, diagnosis or perceived quality of life.

Restraint requires necessity and proportionality under the applicable framework; domestic incapacity must not now be treated as automatic absence of valid Article 5 consent to confinement, and unresolved or negative consent still requires the applicable authorisation and legal review.

Scotland and Northern Ireland use different statutory structures, so England-and-Wales terminology and documents cannot be applied automatically.

Investigation priorities

01
Capacity and timing confirmationFirst step

Verify inability for this decision and whether safe delay could restore personal decision making.

Management branches

Best-interests processAuthority first, then person-centred balance

The patient cannot make the specified decision and safe delay will not restore capacity in time.

  1. Check binding refusals, proxy or court authority and involve the person using the best available communication and support.
  2. Gather wishes, values, professional evidence and appropriate consultation, then compare all clinically available options and no action.
  3. Select the least restrictive effective course, explain reasoning and dissent and assign a review point and responsible decision maker.
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Sources and review status6 sources · checked 27 Aug 2026 · clinical review pending+
Sources

Sources and review status

National guidance is shown before implementation-dependent detail. Apply principles in context and verify current guidance when a decision affects care. Source check completed 27 Aug 2026; clinical approval remains outstanding.

  • Mental Capacity Act 2005England-and-Wales advance decisions, best interests, restraint, LPAs and court powers.
  • NICE NG108 mental capacity recommendationsBest-interests meetings, supported involvement, advocacy and least restriction.
  • Mental Capacity Act code of practiceOperational England-and-Wales guidance on decision makers, best interests and safeguards.
  • Adults with Incapacity Scotland Act 2000Scottish benefit, least restriction and welfare authority framework.
  • Mental Capacity Northern Ireland Act 2016Northern Ireland statutory framework with phased implementation.
  • UK Supreme Court judgment UKSC 2025 0042[2026] UKSC 16 on Article 5 consent to confinement and its distinction from domestic decision-making capacity.

Editorial contact: Doctor’s Passport editorial team. Source-check date is separate from clinical approval. Report a content problem · Content changes

Authoring stateRapid draftClinical stateAwaiting review
JurisdictionUnited Kingdom