01Purpose and principlesWhat the treatment does and how it fits into care.
Begin by confirming the decision and the supported capacity assessment. Ask whether delay could allow the person to decide. Then identify existing authority before starting a best-interests balance. In England and Wales, a valid applicable advance decision to refuse the proposed treatment determines the issue; an appropriately empowered health-and-welfare lasting power of attorney or court-appointed deputy may decide within scope. Verify documents, restrictions and life-sustaining-treatment powers. A relative described as next of kin cannot consent merely through relationship.
Involve the person as much as possible through accessible information, observation of preferences, familiar support and communication aids. Identify current wishes and feelings, earlier statements, advance care plans, values, beliefs and what the person considered a good life. Consult people close to them and relevant professionals for evidence, not a vote. Examine conflicts: a family member may know the person well but also face financial, emotional or caregiving pressures. Record dissent rather than manufacturing consensus.
Compare real options. State expected benefits, burdens, likelihood, timing, reversibility and effect on dignity, liberty, relationships and future choice. Include no treatment, time-limited treatment and less intrusive alternatives when clinically available. Avoid judging that disability makes life less valuable or that age removes benefit. The decision maker is usually the professional responsible for the proposed treatment unless lawful proxy or court authority applies. Explain why the selected option best reflects the person as a whole.
Least restriction is active analysis. Consider whether supervision, environmental adaptation, voluntary support, shorter duration or review can achieve the aim with less interference. Under the England-and-Wales MCA, restraint connected to care or treatment must be reasonably believed necessary to prevent harm and proportionate to likelihood and seriousness. In [2026] UKSC 16, the Supreme Court held that lack of domestic decision-making capacity does not automatically establish lack of valid consent for Article 5 confinement: current wishes and feelings and a basic understanding of the confinement matter. This does not remove best-interests or safeguarding duties. If the person resists, expresses negative wishes or Article 5 consent is ambiguous, use the applicable authorisation and obtain current local or legal review while operational guidance develops. Covert medication still needs a medicine-specific decision, multidisciplinary planning and review; convenience is insufficient.
Use jurisdiction-specific law. Scotland's Adults with Incapacity framework emphasises benefit, lack of a reasonable less restrictive alternative, wishes and consultation, with distinct certificates and welfare powers. Northern Ireland's 2016 Act has phased implementation alongside current local arrangements. In England and Wales, an IMCA may be mandatory for specified serious medical treatment or accommodation decisions when the person has no appropriate unpaid consultee, subject to statutory details. Seek legal review early when authority, life-sustaining treatment or liberty is disputed.
Key points
- 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.
02Indications, selection and cautionsWho may benefit, who needs urgent treatment and important alternatives.
A valid applicable advance decision in England and Wales refuses the current treatment and therefore precedes any best-interests balancing.
A registered welfare attorney, deputy, guardian or court order covers the exact decision within stated limits under the governing jurisdiction.
No appropriate unpaid person can be consulted, potentially activating statutory advocacy for specified decisions in England and Wales.
Clinicians, proxy or family disagree about authority, wishes or major benefit and burden, prompting formal meeting, second opinion and possible court review.
Restraint, supervision or placement exceeds what is necessary for the likelihood and seriousness of harm or lacks separate liberty safeguards.
Domestic incapacity does not settle whether the person validly consents to confinement; current wishes, feelings, basic understanding and any resistance require separate legal analysis.
03Assessment before treatmentTests and checks that guide safe selection.
Read from the initial assessment onwards. Tests may run in parallel in urgent care; first-line, preferred, confirmatory, definitive and gold-standard labels appear only when the chapter explicitly states them.
- 01
Capacity and timing confirmationFirst step - Why
- Verify inability for this decision and whether safe delay could restore personal decision making.
- Interpretation and limitations
- Best interests is not reached merely because the person has a diagnosis or previously lacked capacity for another choice.
- 02
Authority search - Why
- Identify advance refusal, welfare attorney, deputy, guardian, court order and jurisdiction-specific certificate.
- Interpretation and limitations
- Verify identity, validity, applicability and scope. A finance power or informal family role cannot authorise healthcare by default.
- 03
Wishes, values and consultation map - Why
- Gather current and past wishes, beliefs, relationships, life priorities and evidence from suitable consultees.
- Interpretation and limitations
- Weight evidence for relevance and reliability while preserving the person's own participation and documenting conflicts or dissent.
- 04
Options and proportionality analysis - Why
- Compare benefit, burden, reversibility, no treatment, delay and less restrictive alternatives.
- Interpretation and limitations
- Choose among clinically available options and explain why the selected course best reflects the person rather than service convenience.
- 05
Safeguard and review check - Why
- Determine advocacy, second opinion, court, restraint, Article 5 consent, liberty authorisation and review requirements.
- Interpretation and limitations
- Do not infer absence of Article 5 consent solely from domestic incapacity. Negative or ambiguous wishes about confinement need the applicable authorisation and current legal or local review; urgency may shorten consultation but not remove safeguards.
04Treatment approachPreparation, options, escalation and aftercare.
01Best-interests processAuthority first, then person-centred balanceFirst stepThe patient cannot make the specified decision and safe delay will not restore capacity in time.+
- 1Check binding refusals, proxy or court authority and involve the person using the best available communication and support.
- 2Gather wishes, values, professional evidence and appropriate consultation, then compare all clinically available options and no action.
- 3Select the least restrictive effective course, explain reasoning and dissent and assign a review point and responsible decision maker.
02Restriction decisionTest necessity, proportionality and legal safeguardsThe proposed plan involves restraint, covert treatment, continuous supervision or loss of liberty.+
- 1Define the harm being prevented and consider environmental, relational, communication and treatment alternatives with less restriction.
- 2Assess Article 5 consent separately from domestic capacity, including current wishes, feelings, basic understanding and resistance, then obtain the applicable liberty authorisation, medication review or advocacy required by jurisdiction.
- 3Record method, duration, monitoring and stopping criteria and use current local or legal review where consent is negative or unclear.
03Serious disputeEscalate process before crisisEscalationAuthority, validity of refusal or best interests remains contested for major or life-sustaining treatment.+
- 1Clarify the clinical question and legal documents, convene a structured meeting and seek a second opinion, advocacy and senior advice.
- 2Use mediation or ethics support where helpful without allowing it to replace the court when legal determination is required.
- 3Provide only necessary holding treatment during genuine urgency and obtain jurisdiction-specific legal or court review without avoidable delay.
05Complications, monitoring and follow-upAdverse effects, response and longer-term review.
- Reassess capacity and best interests when health, prognosis, treatment options, setting or the person's expressed wishes change.
- Verify that time-limited trials have explicit outcome measures and stopping points rather than continuing because treatment has already begun.
- Review restraint and covert administration for ongoing necessity, proportionality, adverse effects and availability of a less restrictive option.
- Revisit current wishes, feelings, basic understanding and resistance to confinement because Article 5 consent is not answered automatically by a domestic capacity finding.
- Check that advocates, proxies, relatives and the person receive agreed information and that dissent is carried into subsequent reviews.
- Audit whether the correct jurisdiction, legal authority, decision maker and liberty safeguard appear clearly in handovers and records.
06Special situationsVariants, exceptions and circumstances that change the usual approach.
Best interests is personal
The same clinical option may weigh differently for two people because past wishes, relationships, burdens and valued outcomes differ.
Consultation is evidence
Relatives inform the decision about the person but do not gain equal votes or vetoes unless they possess relevant legal authority.
Least restriction needs comparison
Merely describing an intervention as necessary is inadequate when supervision, timing, environment or communication could achieve safety with less intrusion.
Urgency narrows authority
Emergency action should cover what cannot safely wait and should not be used to settle unrelated or long-term decisions without process.
Review protects autonomy
A sound decision can become disproportionate when capacity returns, prognosis changes or a workable less restrictive alternative appears.
Capacity tests differ
After the 2026 Supreme Court ruling, domestic inability to make a placement decision cannot by itself prove that Article 5 consent to confinement is absent.
07Common pitfallsFrequent interpretation and management errors.
- 01
Beginning a best-interests meeting before checking a valid advance refusal or authorised proxy.
- 02
Asking next of kin to consent without relevant health-and-welfare power.
- 03
Treating family consensus as the legal test or ignoring the person's present wishes.
- 04
Choosing the easiest placement for services without comparing less restrictive options.
- 05
Using best interests to override a valid applicable treatment refusal.
- 06
Applying restraint or covert medication without a decision-specific necessity and review process.
- 07
Assuming either that domestic incapacity automatically defeats Article 5 consent or that basic apparent assent automatically removes liberty safeguards.
- 08
Using England-and-Wales advocacy or forms in another UK nation without verification.