The Ground Just Shifted: What the Supreme Court's Cheshire West Ruling Means for Your Organisation — Right Now

Jenny Wilde (opens new window)
Senior Partner @ Acuity Law | Solicitor advising on Health and Social Care Regulation and operational matters
Published 5 June 2026 on LinkedIn (opens new window)

On 2 June 2026, the Supreme Court did something remarkable: it overruled itself.

In A Reference by the Attorney General for Northern Ireland [2026] UKSC 16, a seven-justice panel — larger than usual, precisely because they knew what they were being asked to do — unanimously struck down the "acid test" established by P v Cheshire West in 2014. That test had governed how health and social care providers, commissioners, local authorities and courts determine whether a person is being deprived of their liberty for over a decade.

It is gone. The question now is: what do you do on Monday morning?

A Quick Recap: What Was the Acid Test?

For those who have been applying it daily without necessarily knowing its origins, the acid test asked two things:

  1. Is the person under continuous supervision and control?
  2. Are they not free to leave their placement?

If the answer to both was yes, that was a deprivation of liberty — regardless of whether the person was happy, consenting in their own way, or living in the most caring environment imaginable. As Baroness Hale famously put it in 2014: "A gilded cage is still a cage."

The test was deliberately generous in scope. It was born partly from the shadow of Winterbourne View — the shocking abuse at a closed unit for people with learning disabilities exposed by an undercover Panorama investigation in 2011. The sector needed more independent oversight, not less.

But the test also created an enormous administrative burden. It triggered a tsunami of Deprivation of Liberty Safeguards (DoLS) applications. Backlogs became chronic. The system never caught up.

What Has the Supreme Court Now Said?

The court was asked a deceptively narrow question by the Attorney General for Northern Ireland: could a revised DoLS code of practice in Northern Ireland validly allow people who lack mental capacity under statute to nonetheless give consent to their confinement through their wishes and feelings?

The answer was yes — but the court went much further.

It held that the acid test "departed from the longstanding multifactorial approach to determining whether a person is deprived of liberty within the meaning of Article 5 and is wrong." The European Court of Human Rights in Strasbourg had never adopted a single bright-line test. The UK's 2014 ruling had, in the court's view, been driven by a "misplaced policy concern" that led to an over-extensive interpretation of deprivation of liberty.

Three things now replace the acid test:

  1. No single test — a multifactorial assessment instead. Back to context. Back to judgment. Providers must now look at the whole picture: the nature and degree of restrictions, the extent of coercion, the person's concrete situation, and crucially — their expressed wishes and feelings.
  2. Lack of legal capacity is not equal to lack of valid consent. This is the conceptual shift at the heart of the judgment. A person can lack capacity under the Mental Capacity Act 2005 to decide where they live or receive care, and yet still be able to communicate — verbally, behaviourally, non-verbally — whether they are happy with their arrangements. That communication now counts as valid consent for Article 5 purposes.
  3. Coercion is central. If a person's will is being overridden — if they are objecting, if they are being returned by force when they try to leave, if chemical or physical restraint is being used — that will point strongly towards a deprivation of liberty. Contentment and apparent happiness point the other way.

What Does This Mean in Practice?

Let me be direct, because this is where it matters.

For care homes and hospitals: Many people currently subject to DoLS authorisations will no longer meet the threshold. If a resident appears settled, communicates no distress, and is not being restrained or coerced, a DoLS may not be required. That does not mean abandon oversight — it means reassess.

For supported living and community settings: Court of Protection applications that were triggered by the acid test may need to be reviewed. Not every placement automatically engages Article 5 now.

For social workers and care coordinators: The clear two-part test you have been trained on no longer applies. You will need to make a more nuanced, documented judgment about each individual's situation. BASW has already signalled it will be seeking urgent government guidance — and has described the transition period as one of "upheaval."

For providers and commissioners: Existing authorisations do not disappear overnight, but you need a plan. Which placements need fresh assessment? How will your staff be supported and retrained?

For legal and compliance teams: This is not a situation where you can wait for updated national guidance before acting. The Supreme Court judgment took effect on 2 June 2026. Review your current DoLS caseloads and Court of Protection applications now.

The Tensions Are Real — And Should Not Be Minimised

It would be wrong to present this as a straightforwardly good or bad development.

Disability charities including Mencap, Mind, and the National Autistic Society have described it as "the biggest rollback of disability rights in a generation." They have raised a legitimate and serious concern: independent oversight, advocacy, and automatic access to legal aid were the safeguards that the acid test triggered. Without that trigger, many of those protections will no longer automatically apply. For the circa 400,000 people currently treated as deprived of their liberty, that is a significant change.

Winterbourne View happened in 2011. Similar scandals have occurred since. Closed environments without independent checks create risk. The history of the sector teaches that repeatedly.

At the same time, there is a genuine argument — reflected in the judgment — that classifying hundreds of thousands of settled, content individuals as "deprived of their liberty" had become a legal fiction that provided little real protection while consuming resources that could have been better directed. Mark Cooper, BIA course leader at the University of Manchester, has observed that the assessment backlog meant many of those nominally "protected" by DoLS were waiting years for any meaningful review.

Both things can be true. The law has changed. The underlying vulnerability of the people we work with has not.

Five Things to Do Now

  1. Audit your current DoLS caseload and flag those where the only basis for authorisation was the acid test — i.e., supervision and not free to leave — without coercion, restraint, or active objection.
  2. Review your documentation practices. Multifactorial assessments require more, not less, recording. Wishes and feelings evidence, behavioural indicators, how communication of consent or dissent is being captured — all of this needs to be in the file.
  3. Train your frontline staff. The two-part checklist is gone. Professional judgment is back. That requires support and investment, not just a circular from the centre.
  4. Do not wait for statutory guidance to start reassessing. Guidance will come — DHSC, NHS England, and the CQC will all need to update their frameworks — but the law changed on 2 June. You are operating under the new legal framework now.
  5. Keep safeguarding central. The test has changed; the duty of care has not. Objection, distress, and restriction must still be responded to. If anything, that now requires greater professional alertness, not less.

 

CQC has responded with the following

CQC statement on the Supreme Court's judgment on deprivation of liberty (opens new window)

9 June 2026

On 2 June 2026, the Supreme Court handed down its judgment in A Reference by the Attorney General for Northern Ireland (opens new window). The Supreme Court judgment is a significant development in case law. The judgment establishes a new approach to establishing whether a person may be deprived of their liberty.

We acknowledge this change may cause uncertainty as it has an impact on people who use services, providers and local authorities. We are discussing this judgment with the Department of Health and Social Care (DHSC) and other key partners.

What this means for providers

The judgment has immediate effect. This means that providers need to familiarise themselves with this legal development and adjust their practice accordingly. We recognise that this judgment may lead to questions about how the different factors should be interpreted and applied in practice. Where appropriate, providers may need to obtain legal advice to ensure that they are compliant with the law while they are waiting for any official guidance to be published. We will therefore adopt a proportionate approach in our assessments while we work with partners in the health and care system to determine the practical impact of this revised position.

Our assessments will still focus on ensuring that providers continue to:

  • demonstrate that they are considering, on a case-by-case basis, whether an authorisation to deprive someone of their liberty may be required
  • provide person-centred care, using effective ways to gather the views of each person using the service about their care
  • meet the requirements of the Mental Capacity Act 2005, including acting in a person’s best interests, irrespective of whether they are deprived of their liberty.

Providers are still required to comply with the requirements set by the Health and Social Care Act 2008 and associated regulations. 

It is important to note that:

  • the definition of ‘valid consent’ does not apply for the purposes of determining whether a person is consenting to their care and treatment
  • there is no change to requirements of the Mental Capacity Act 2005 and Regulation 11 of the Health and Social Care Act 2008 (Regulated Activities) Regulations 2014.