Deprivation of Liberty revisited: the Supreme Court overrules Cheshire West

How is a “deprivation of liberty” interpreted under Article 5 of the European Convention on Human Rights (ECHR)?

On 2 June 2026, the Supreme Court handed down its highly anticipated decision in A Reference by the Attorney General for Northern Ireland [2026] UKSC 16. This marked a fundamental shift in how a “deprivation of liberty” is to be interpreted.

The dispute

If an individual lacks capacity, can they still give “valid consent” for the purposes of Article 5, thereby avoiding care arrangements from constituting a “deprivation of liberty”? The Supreme Court unanimously decided the answer was ‘yes’, overruling the previous long-standing authority of Cheshire West [2014] UKSC 19. We take a deeper look into the reasoning behind the decision below.

A multifactorial assessment

The Supreme Court stressed that the concept of a “deprivation of liberty” stems from the ECHR and is derived from Strasbourg jurisprudence rather than domestic statute.

The inquiry retains both:

An objective element (confinement to a particular restricted space for a material period of time); and
A subjective element (absence of “valid consent”).

However, these elements are not self-contained. Decision-makers are required to consider an individual’s personal circumstances in a practical and realistic manner. This involves the assessment of multiple factors, including the type, duration, effects, and manner in which measures are implemented.

Further, the Supreme Court reaffirmed that the boundary between a “deprivation of liberty” and a restriction on movement predicates upon degree and intensity, instead of the type of restriction. No single factor can be determinative, and elements such as compliance or acquiescence may be relevant parts of the overall assessment.

Moving beyond Cheshire West

Cheshire West’s “acid test” had considered an individual to be deprived of their liberty as a result of being (i) under continued supervision/control; and (ii) not free to leave. This was used as a determinative rule, which the Supreme Court stressed was inconsistent with Strasbourg jurisprudence.

The six legal errors identified by the Supreme Court are as follows:

Holistic assessment – the “acid test” was too simplistic and displaced the multifactorial analysis required to accurately assess an individual’s situation;
Subjective experience – treating lack of objection or compliance as not legally relevant failed to recognise Strasbourg authority which allows for overlap between the objective and subjective elements;
Normality of placements – it is important to consider whether care is provided in a domestic or community setting, as the two may have fundamental differences:
Innate limitations – the “acid test” disregarded the possibility of restrictions arising from an individual’s medical or physical conditions, which may then require external limitations;
Purpose of restrictive measures – whilst not determinative, this could potentially be a relevant factor, particularly where arrangements are protective or therapeutic in nature; and
Conflation of capacity and “valid consent” – lack of the former does not automatically mean the latter is also absent.

It is important to note the difference between genuine consent and mere acquiescence for the purposes of “valid consent”. Despite lacking capacity, individuals may have sufficient basic awareness and understanding to express a meaningful view on their residence or care arrangements. Such evidence of wishes and feelings may amount to “valid consent” under Article 5, but passive compliance is not enough to satisfy the same.

Conclusion

Local authorities, health boards and care providers should note the likely increased importance of thorough collecting and recording of evidence, especially in borderline cases where an individual’s wishes and feelings are unclear or fluctuating. Where “valid consent” cannot be adequately established, the existing framework for review and authorisation will continue to apply.

The Supreme Court’s judgment represents a focused move towards more individualised, multifactorial assessments – a single determinative test is no longer adequate to determine whether there is a “deprivation of liberty” requiring protection under Article 5 ECHR.

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