Mental Capacity Assessment

Retrospective Mental Capacity Assessment

Court-ready retrospective capacity reports for disputed past decisions, across England and Wales.

A retrospective mental capacity assessment is an expert opinion about whether a person had the mental capacity to make a particular decision at a point in the past. It reconstructs decision-making ability from the evidence of the relevant time, such as medical records, professional documentation and witness evidence. It applies the legal test to the decision in dispute: the Mental Capacity Act 2005 for most living-person matters and Banks v Goodfellow in will disputes after death.

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£3,500 + VAT

Scope and fee confirmed at triage

Dependent upon application

Turnaround

England and Wales

Nationwide coverage

CPR Part 35

Court-ready reporting

Nellie Supports is England and Wales' largest identified specialist private social work and mental capacity assessment practice, delivered by a permanent full-time team. Services are provided by employed, multidisciplinary professionals, not an ad hoc associate, contractor or referral-panel model. We have completed over 11,000 formal assessments and reports. This service sits alongside our full range of mental capacity assessment services.

When you may need a retrospective assessment

A retrospective mental capacity assessment may be needed when a decision made in the past is now being challenged, and there is no clear, reliable or sufficient evidence of capacity from the time. The key question is not what the person can decide now, but whether they had the capacity to make that specific decision at the time it was made.

This commonly arises in will and probate disputes, Court of Protection matters, insurance and personal injury claims, disputed financial or property transactions, and cases involving healthcare decisions such as consent to or refusal of treatment. Many retrospective cases arise precisely because there was no formal capacity assessment at the time, which does not make the analysis impossible, but does mean the report must be especially careful about the reliability of each source and the limits of the evidence.

The legal framework for retrospective capacity

The framework depends on the type of decision and the context in which the report is used, but the core principle is always the same: capacity is assessed by reference to the specific decision and the relevant time. Depending on the matter, the framework may be:

The Mental Capacity Act 2005, for most disputes involving living persons

Banks v Goodfellow, for will disputes considered after death

CPR Part 35 and Practice Direction 35, where the report is expert evidence in litigation

The relevant information and time period for the exact decision in dispute

A diagnosis on its own is not enough, and neither are vulnerability, unusual behaviour, family disagreement, or the fact that the person later lost capacity. What matters is whether the report applies the correct legal test to the specific issue, focuses on the exact decision and time, and explains the reasoning clearly and independently.

Framework: Mental Capacity Act 2005; Banks v Goodfellow (1870) LR 5 QB 549 for testamentary matters; CPR Part 35 and Practice Direction 35 for expert evidence in litigation.

For the framework in full, read our guide: assessing capacity at a historical date.

Our retrospective assessment process

Initial enquiry and triage

We discuss the background, the decision being challenged, the relevant time period, and what the report is needed for, confirming whether a retrospective assessment is appropriate and the likely scope.

Evidence gathering and document review

Once instructed, we identify and review the key material from the relevant period, including medical records, care notes, legal documents, correspondence, witness evidence and safeguarding material.

Analysis of the decision and relevant evidence

We analyse the evidence against the correct legal framework, considering the specific decision, the relevant information, any impairment, and whether the person was likely able to understand, retain, use or weigh the information and communicate a decision at that point.

Report preparation

A detailed report is prepared, setting out the evidence considered, the legal and professional framework applied, the reasoning followed, and the expert opinion reached, written for confident use in legal or formal settings.

Peer review and secure delivery

Before delivery, the report is reviewed internally for clarity, balance and quality assurance, then provided securely, with clarification available for the next stage of the matter.

What the assessor evaluates

A strong retrospective assessment explains not just the conclusion, but how it was reached from the available evidence, in a way that is balanced and defensible.

The exact decision being disputed and the relevant date or timeframe

The contemporaneous records reviewed, closest in time to the decision

What relevant information the person needed to understand for that decision

Evidence of any impairment or disturbance in the functioning of the mind or brain

The person's likely ability to understand, retain, use or weigh the information

Their likely ability to communicate a decision at that time

Factors such as delirium, dementia, brain injury, medication, grief, depression or coercion

What is shown directly, what is inferred, and where the limits of the evidence lie

Retrospective assessment fees and timescales

£3,500 + VAT

VAT at 20% and travel costs are not included.

A detailed review of contemporaneous records from the time in question

Decision-specific legal analysis tied to the exact decision being challenged

Functional capacity analysis of understanding, retaining, using or weighing and communicating

A record-led reconstruction of past capacity from the available evidence

Witness and professional interviews where the papers alone do not tell the full story

A court-ready written report, internally peer reviewed before delivery

Travel charged at £40.00per hour

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A full-time, multidisciplinary team

Nellie Supports is built on an employed, permanent team: registered social workers, a Chartered Psychologist and specialist assessors working together to one standard, with every report peer reviewed by a second qualified professional. Your assessment is never passed to an associate bank or referral panel.

The right professional for the decision

Capacity questions range from care and residence to complex cognition and prognosis. A multidisciplinary team means the discipline is matched to the decision, not to whoever is available.

One consistent standard

The team works together full time, so every assessment follows the same methodology and peer review is built into every report rather than bolted on.

Accountability you can name

Your report is signed by an employed professional who answers for their work, and the practice stands behind it.

Continuity, not hand-offs

The people who take your enquiry, carry out the assessment and review the report all work in one practice, so nothing is lost between stages.

How this works in practice

The situation

After an elderly man died, his family challenged a Will he had made a few months before his death, while he was in hospital with a serious illness. There had been no formal capacity assessment at the time, and the executors needed an independent opinion on whether he had testamentary capacity when the Will was made.

The approach

The assessment was records-led. We reviewed the hospital and GP records, the solicitor's attendance notes, the Will and any earlier versions, and the wider evidence from around the relevant date, applying the Banks v Goodfellow test to that specific decision at that specific time.

The outcome

The report set out clearly what the evidence supported, what could only be inferred, and where the limits of the evidence lay, reaching a reasoned, balanced opinion the parties could rely on. Retrospective reports carry weight precisely because they are careful about certainty, rather than overstating it.

This is an illustrative example, drawn from the common features of the retrospective assessments we carry out. It does not describe any individual client.

Why families, solicitors and professionals choose Nellie Supports

Decision-specific, not generic

We focus on the actual decision in dispute, the exact time period, and the available evidence, not a general comment on someone's health.

Grounded in contemporaneous evidence

The opinion is anchored in the records and material closest in time to the disputed decision.

Clear about fact, opinion and inference

We distinguish what the records show, what witnesses recall, what can be inferred, and where the limits lie.

Built for scrutiny

Suitable for probate, Court of Protection, litigation and disputed transaction contexts, structured with expert evidence standards in mind.

Precise, not overstated

Credibility in retrospective work comes from precision, so the report says clearly what can and cannot be concluded.

Multidisciplinary quality assurance

A multidisciplinary practice with structured internal peer review before every report is delivered.

Retrospective capacity FAQs

Do you need to meet the person for a retrospective assessment?

Usually, no. A retrospective assessment is primarily based on evidence from the relevant time rather than current presentation. The key material comes from medical records, care notes, legal documents and witness evidence. Where useful, a present-day assessment can be added for context, but the core opinion focuses on the past decision.

What happens if the records from the time are incomplete?

Incomplete records do not necessarily prevent a retrospective assessment, but they affect how far the opinion can go. The assessor looks carefully at the quality of the available evidence, and a good report is clear not only about what the evidence supports, but also where there are gaps, limits or uncertainty.

Can it help if there was never a formal assessment at the time?

Yes. That is one of the most common reasons these assessments are needed. Where no formal assessment was completed, the task is to reconstruct likely decision-making ability from the surrounding evidence, providing a structured, independent opinion where the original evidence was missing or unclear.

Is this the same as a testamentary capacity assessment?

Not always. A testamentary capacity assessment is specifically about capacity to make a will. A retrospective assessment is broader and can apply to many past decisions. Where the issue is a disputed will, the retrospective report may deal with testamentary capacity, but retrospective work is not limited to probate matters.

Can the report comment on undue influence or coercion?

It can consider evidence of pressure, coercion, vulnerability or possible undue influence where relevant to the person's ability to make the decision. However, it stays clear about the difference between assessing capacity and determining wider legal issues, which may ultimately be for the court to decide.

Will the report be suitable for court use?

Yes, where it is prepared for that purpose. Retrospective reports are often used in probate disputes, Court of Protection matters and civil litigation. A strong report is clear, independent, properly reasoned, and focused on the actual issue the court or parties need answered.

Retrospective capacity guides

What is a retrospective mental capacity assessment?

The decision, the evidence and the opinion explained

Assessing capacity at a historical date

How experts reconstruct capacity from the records

Evidence needed for a retrospective capacity opinion

What material strengthens the opinion

Retrospective capacity in disputed transactions and wills

Applying the right test to the right decision

Limits of retrospective mental capacity evidence

What retrospective evidence can and cannot show

Other assessment types

If the dispute concerns a will, a statutory will application, or a Court of Protection decision, our team can also help with those specific assessments.

Testamentary capacity assessment

For making or amending a Will, applying the Banks v Goodfellow test.

Statutory will assessment package

Court-ready evidence package for a Court of Protection statutory will application.

COP3 mental capacity assessment

For Court of Protection deputyship applications.

Nellie Supports provides independent social work assessment, evidence and advocacy support. We do not provide regulated legal advice, and where a legal remedy is needed we will say so and support your solicitor's work.