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Deprivation of Liberty Safeguards and Best Interest Assessments: What Organisations Need to Know

A Deprivation of Liberty Safeguard (DoLS) authorisation protects individuals who lack the mental capacity to consent to their care arrangements, where those arrangements amount to a deprivation of their liberty. At the centre of every DoLS authorisation is a Best Interest Assessment (BIA), carried out by a qualified and approved assessor who determines whether the deprivation is in the person's best interests and whether it is necessary and proportionate. This guide explains how DoLS works, what a Best Interest Assessment involves, what the AGNI judgement of June 2026 means for how those assessments are conducted, and how local authorities and care organisations can commission an independent BIA when an internal assessor is unavailable or inappropriate.

A Deprivation of Liberty Safeguard is a legal mechanism under Schedule A1 of the Mental Capacity Act 2005 that authorises the deprivation of liberty of a person aged 18 or over who lacks the mental capacity to consent to the arrangements under which they are being cared for.

DoLS applies in two settings only: care homes registered under the Care Standards Act 2000 and NHS hospitals. Where a person is deprived of their liberty in any other setting — including their own home, a supported living placement, or a community facility — the authorisation must be sought from the Court of Protection rather than through the DoLS process.

The supervisory body for a DoLS authorisation is either a local authority (for care home residents) or an NHS body (for hospital inpatients). The managing authority — the care home or hospital — applies to the supervisory body for a standard authorisation when it reasonably believes a deprivation of liberty is occurring or is likely to occur.

A standard authorisation requires six assessments to be completed: age, mental health, mental capacity, best interests, eligibility, and no refusals. Of these, the Best Interest Assessment is the most substantive and carries the most weight in determining whether authorisation should be granted.

What is a Deprivation of Liberty Safeguard (DoLS)?

The acid test and what constitutes a deprivation of liberty

The legal test for whether a person is being deprived of their liberty was established by the Supreme Court in the Cheshire West case (P v Cheshire West and Chester Council [2014] UKSC 19). The acid test asks two questions:

  1. Is the person under continuous supervision and control?

  2. Is the person free to leave?

If the answer to the first question is yes and the answer to the second is no, the person is deprived of their liberty, regardless of whether the setting is comfortable, whether the person appears content, or whether the care is of high quality. The purpose of the care is irrelevant to the question of whether a deprivation is occurring.

Cheshire West significantly widened the scope of what counts as a deprivation of liberty and led to a substantial increase in DoLS applications. It remains the governing authority on the acid test, though the AGNI judgement of June 2026 has added important nuance to how the assessment is conducted in cases where the deprivation arises from multiple overlapping factors.

What is a Best Interest Assessment?

A Best Interest Assessment is one of six assessments required before a standard DoLS authorisation can be granted. It is carried out by a Best Interest Assessor (BIA) appointed by the supervisory body and is the assessment that determines whether deprivation of the person's liberty is actually in their best interests.

The BIA must assess and record the following:

  • Whether the deprivation is in the person's best interests

  • Whether the deprivation is necessary to prevent harm to the person

  • Whether the deprivation is a proportionate response to the likelihood of that harm and its seriousness

  • Whether there is a less restrictive option that would meet the person's needs

  • The person's wishes, feelings, values, and beliefs — insofar as they can be ascertained — and how much weight to give them

  • The views of carers, family members, and any advocate involved

The BIA produces a written report setting out their reasoning and their recommendation. Where the BIA recommends authorisation, the supervisory body may grant it. Where the BIA recommends refusal, the supervisory body must refuse — the BIA's recommendation is binding in this direction. The supervisory body cannot grant authorisation against a BIA recommendation of refusal.

Who can act as a Best Interest Assessor (BIA)?

A Best Interest Assessor must meet the eligibility criteria set out in Schedule A1 of the Mental Capacity Act 2005 and the Mental Health (Hospital, Guardianship and Treatment) (England) Regulations 2008 (as amended).

To be eligible to act as a BIA, a person must:

  • Be a registered social worker, registered nurse, occupational therapist, chartered psychologist, or registered medical practitioner

  • Have completed an approved BIA training course

  • Have a minimum of two years' post-qualifying experience in a relevant field

  • Be approved by the supervisory body as competent to undertake BIA work

The BIA must be independent of the managing authority and, in standard cases, independent of the supervisory body. An employee of the care home or hospital where the person lives cannot act as their BIA. Where the supervisory body is also involved in the person's care, a BIA from an independent source may be required to ensure proper independence.

Neil Courtney, Senior Independent Social Worker is a qualified and experienced BIA, registered with Social Work England (registration number SW22867) and Social Care Wales (registration number W/5112188). He has completed approved BIA training and brings over two decades of post-qualifying experience across the full range of settings in which DoLS assessments arise. As a fully independent practitioner with no affiliations to any local authority or care organisation, Neil meets the independence requirements in all cases.

The AGNI judgement (June 2026) and what it means for DoLS assessments

The AGNI judgement, handed down by the Court of Protection in June 2026, addresses how BIAs should approach cases where the deprivation of liberty arises not from a single dominant restriction but from the combined effect of multiple factors, each of which might individually fall below the threshold for a deprivation of liberty.

Before AGNI, practice varied on whether a multifactorial deprivation — one arising from, for example, locked doors, physical assistance during transfers, medication regimes, and structured daily routines taken together — required the BIA to assess and record each factor separately, or whether the cumulative effect was sufficient. AGNI clarified that the acid test must be applied to the overall picture of the person's circumstances, not to each individual restriction in isolation. The question is whether, taken together, the arrangements amount to a continuous supervision and control in conditions where the person is not free to leave — not whether any single element passes the threshold independently.

In practice, this means BIAs conducting assessments in complex care settings — particularly those involving significant physical dependency, behavioural support, or restraint — must now document the full matrix of restrictions and address how they interact. Assessments that focus narrowly on a single element (such as locked doors) and conclude that no deprivation is present without considering the overall picture will not be sufficient.

The AGNI judgement also reinforces the importance of the less restrictive alternative analysis. Where the deprivation arises from multiple overlapping factors, the BIA must address whether each contributing factor is individually necessary and whether the combination, in its entirety, is proportionate. This is a more demanding analysis than was routinely applied before June 2026.

For local authorities and care organisations commissioning BIAs, AGNI means that assessors must be current on post-June 2026 practice and capable of applying the multifactorial analysis. An independent BIA with active, current practice is well placed to conduct these assessments correctly.

The difference between DoLS and the Liberty Protection Safeguards (LPS)

The Liberty Protection Safeguards (LPS) were introduced by the Mental Capacity (Amendment) Act 2019 as the intended replacement for DoLS. Implementation has been repeatedly delayed and, as of August 2026, DoLS remains the operative framework. No confirmed implementation date for LPS has been set by the government.

The key differences between the two frameworks, when LPS does eventually come into force, will be:

Scope DoLS applies only in care homes and hospitals. LPS will extend the framework to all settings, including the person's own home, supported living, and community settings — removing the need for Court of Protection applications in a much larger number of cases.

Who applies Under DoLS, the managing authority (the care home or hospital) applies to the supervisory body. Under LPS, the "responsible body" — which may be the NHS body, the local authority, or the care home manager — will be responsible for arranging the assessments and making the authorisation decision.

Assessment structure DoLS requires six assessments. LPS will replace these with three: a capacity assessment, a medical assessment, and a necessary and proportionate assessment. The Best Interest Assessor role as currently constituted will not exist under LPS, though the necessary and proportionate assessment will carry similar responsibilities.

Independent Mental Capacity Advocate (IMCA) Both frameworks require that an IMCA is appointed where the person has no appropriate person to represent them. The IMCA role under LPS will be broader than under DoLS.

Until LPS is implemented, all current practice continues under the DoLS framework. Local authorities and care organisations should not assume that the existing DoLS infrastructure will be changed before further government confirmation is provided.

Neil's role as an independent BIA and Relevant Person's Representative (RPR)

Neil Courtney acts as an independent Best Interest Assessor for supervisory bodies across England and Wales. He is available for standard DoLS BIA instructions across England and  Wales, including in complex cases, urgent cases, and cases requiring the multifactorial analysis clarified by the AGNI judgement.

In addition to the BIA role, Neil can be appointed as a Relevant Person's Representative (RPR) under Schedule A1 of the Mental Capacity Act 2005. The RPR is appointed to represent and support the relevant person — the person subject to the DoLS authorisation — throughout the period of the authorisation and to bring an application to the Court of Protection if required. An RPR must not be involved in providing the person's care or treatment in a professional capacity. As a fully independent social worker, Neil meets this requirement in all cases.

When organisations can commission an independent BIA

Supervisory bodies are required to appoint a BIA who is independent of the managing authority. In most cases, this means drawing on an internal pool of approved BIAs employed by or contracted to the local authority. However, an independent BIA may be required or preferred in a number of circumstances:

  • The internal BIA pool has insufficient capacity to meet demand within the required timescale

  • All available internal BIAs have a conflict of interest in relation to the specific case

  • The person subject to the DoLS application is themselves employed by or closely connected to the supervisory body

  • The case is of sufficient complexity — particularly post-AGNI — that specialist independent input is required

  • A previous BIA report is being challenged and an independent second assessment is needed

  • The managing authority and supervisory body are the same organisation, requiring external oversight

Commissioning an independent BIA does not alter the legal framework governing the assessment. The independent BIA is subject to the same requirements as an in-house assessor and produces a report that carries the same weight in the authorisation decision.

Advocacy and DoLS: how independent social work supports the process

Advocacy is a central element of the DoLS framework. Persons subject to DoLS authorisations are entitled to an Independent Mental Capacity Advocate (IMCA) where they have no appropriate person to support them. IMCAs are separate from the BIA role and must be appointed by the supervisory body in the prescribed circumstances.

Beyond the formal IMCA role, independent social work can support the DoLS process in several ways:

Welfare reviews Where a person remains subject to a DoLS authorisation over an extended period, an independent welfare review can assess whether the conditions that justified the authorisation remain in place and whether the care arrangements continue to be in the person's best interests.

Pre-authorisation advice For care organisations uncertain about whether a DoLS application is required — or about whether current arrangements meet the acid test — an independent social work consultation can help manage risk and ensure that the organisation is meeting its obligations under the Mental Capacity Act 2005.

Court of Protection representation support Where a DoLS authorisation is challenged and the matter proceeds to the Court of Protection, an independent social work report can provide evidence about the person's circumstances, wishes, and best interests.

Relevant Person's Representative support Where an RPR is in place but requires professional guidance on their role, an independent social worker can provide advice and support to help the RPR fulfil their responsibilities under Schedule A1.

Services offered

Expert Social Work Assessments accepts instructions in the following areas within this cluster:

  • Best Interest Assessments (BIA) under Schedule A1 of the Mental Capacity Act 2005

  • Multifactorial BIA work following the AGNI judgement (June 2026)

  • Relevant Person's Representative (RPR) appointments

  • Independent welfare reviews for persons subject to DoLS authorisations

  • Pre-authorisation consultations (advice for care organisations)

  • Best Interest Determinations for welfare decisions outside the formal DoLS process

  • Court of Protection report preparation in DoLS-related proceedings (S.21a)

  • Advocacy support and IMCA service (where Neil is engaged as an independent practitioner in that capacity)

Geographic reach

Neil carries out in-person assessments across all of England and Wales. A postcode is required when requesting a quote so that travel can be accurately accounted for. For matters where video assessment is appropriate and the instructing organisation agrees, remote assessment can be arranged.

Independence

Expert Social Work Assessments has no affiliations or ties to any formal care organisation, local authority, or NHS body. Every Best Interest Assessment and every report produced is fully independent. In the DoLS context, independence is not merely a professional aspiration — it is a legal requirement, and an assessment that lacks genuine independence can expose the supervisory body to challenge. Neil meets the independence requirements under Schedule A1 in all cases.

How to instruct

To instruct Neil or to request a quote, use the referral and information-gathering form on the Contact page. Initial enquiries are also welcome by phone, email, or text.

A free 30-minute telephone or video consultation is available for anyone who wants to discuss their situation before committing to a formal instruction.

FAQ

What is a Deprivation of Liberty Safeguard (DoLS)?

A Deprivation of Liberty Safeguard (DoLS) is a legal mechanism under Schedule A1 of the Mental Capacity Act 2005 that authorises the deprivation of liberty of a person aged 18 or over who lacks the mental capacity to consent to their care arrangements. It applies in registered care homes and NHS hospitals only. Where a person is deprived of their liberty in any other setting, a Court of Protection order is required instead. The DoLS authorisation requires six assessments, the most substantive of which is the Best Interest Assessment carried out by a qualified Best Interest Assessor.

What is a Best Interest Assessor?

A Best Interest Assessor (BIA) is a qualified and approved professional who carries out the Best Interest Assessment required before a Deprivation of Liberty Safeguard authorisation can be granted. The BIA determines whether the deprivation of liberty is in the person's best interests, whether it is necessary to prevent harm, and whether it is a proportionate response. The BIA's recommendation is binding in one direction: if the BIA recommends refusal, the supervisory body must refuse the authorisation. The BIA is appointed by the supervisory body and must be independent of the managing authority.

Who can act as a Best Interest Assessor?

A Best Interest Assessor must be a registered social worker, registered nurse, occupational therapist, chartered psychologist, or registered medical practitioner who has completed an approved BIA training course and has at least two years' post-qualifying experience in a relevant field. The BIA must be approved by the supervisory body and must be independent of the care home or hospital where the person lives. Neil Courtney is a qualified BIA registered with Social Work England (SW22867) and Social Care Wales (W/5112188), with over 20 years of post-qualifying experience and full independence from all care organisations.

What does the AGNI judgement mean for DoLS?

The AGNI judgement, handed down by the Court of Protection in June 2026, clarifies how Best Interest Assessors must approach cases where the deprivation of liberty arises from the combined effect of multiple restrictions rather than a single dominant factor. The judgement confirms that the acid test must be applied to the overall picture of the person's circumstances, not to each individual restriction in isolation. BIAs must now document the full matrix of restrictions in complex care settings and address whether each contributing factor is individually necessary and whether the combination is proportionate. Assessments that focus on a single element without considering the overall picture are not sufficient under post-AGNI practice.

Can a local authority commission an independent BIA?

Yes. Supervisory bodies can and do commission independent BIAs where the internal BIA pool has insufficient capacity, where there is a conflict of interest, where the case is of particular complexity, or where a second independent assessment is required. Commissioning an independent BIA does not alter the legal framework — the independent assessor is subject to the same requirements as an in-house assessor and their report carries the same weight in the authorisation decision. Neil Courtney accepts BIA instructions from supervisory bodies across England and Wales.

What is the difference between DoLS and the Liberty Protection Safeguards?

The Liberty Protection Safeguards (LPS) were introduced by the Mental Capacity (Amendment) Act 2019 as the intended replacement for DoLS, but as of August 2026 they have not been implemented and no confirmed implementation date has been set. The key differences are scope (LPS will extend to all settings, including the person's own home, whereas DoLS applies only in care homes and hospitals), responsible body (the party responsible for arranging assessments changes under LPS), and assessment structure (LPS replaces the six DoLS assessments with three). Until LPS is implemented, the DoLS framework governs all practice.

What is a Best Interests meeting and who chairs it?

A Best Interests meeting is a multi-disciplinary meeting convened to make or review a decision in the best interests of a person who lacks mental capacity, applying the best interests checklist in section 4 of the Mental Capacity Act 2005. It is not the same as the Best Interest Assessment required under DoLS, though both draw on the same legal framework. Best Interests meetings are typically chaired by the lead professional responsible for the person's care — most commonly a social worker or a senior clinician. Family members, carers, advocates, and any relevant professionals should be invited. Where there is a dispute about the outcome, the matter may need to be referred to the Court of Protection.

How long does a DoLS assessment take?

A standard DoLS Best Interest Assessment typically takes between two and four hours, including the time to review case records, conduct the assessment visit, consult with relevant parties, and produce the written report. Complex cases — particularly those involving disputed facts, multiple restrictions requiring post-AGNI multifactorial analysis, or family disagreement — may take longer. Urgent cases can be prioritised. Neil aims to provide reports within five working days of instruction in standard cases, with faster turnaround available on request for urgent authorisations.

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