Litigation Capacity Assessments: A Clear Guide for Solicitors and Families

A hearing sits three weeks away. A solicitor in Nottingham notices their client keeps changing instructions and cannot recall what the claim is even about. That single worry can stall an entire case overnight.

When capacity is in doubt, the court wants evidence, not a hunch. This is where a litigation capacity assessment earns its place in the file.

This guide explains what these assessments involve, the legal test behind them, realistic timelines, current costs and how to choose the right expert. At Gain Expert Assessments we carry out this work across England and Wales, so the examples reflect real practice rather than theory.

Can an articulate client still lack capacity? Should age or a dementia diagnosis settle the question on its own? The honest answers surprise a lot of legal teams.

In short, this article covers the legal test that governs a litigation capacity assessment, the point at which one becomes necessary, and what the process looks like from referral to court-ready report. You will find realistic timelines, current cost ranges for 2026, and a frank look at the mistakes that quietly weaken cases. You will also see where a litigation friend and the Official Solicitor fit in. Read it once, and you will brief a client or instruct an assessor with far more confidence.

What is a litigation capacity assessment?

A litigation capacity assessment is an independent evaluation of whether a person can understand and take part in their own legal proceedings. It looks at the specific decisions a case demands, from giving instructions to approving a settlement. The report gives solicitors and the court a clear, evidence-based opinion instead of guesswork.

The assessment rests on the functional test in the Mental Capacity Act 2005. An assessor checks whether the person can understand relevant information, retain it, weigh it up and communicate a decision.

That is why the capacity to litigate is judged against the actual case in front of the client. A simple debt claim asks less of a person than a complex clinical negligence dispute. Our detailed capacity to litigate assessments are always shaped around the matter in hand.

How litigation capacity compares with other capacity assessments

People often mix these up, so it helps to see them side by side.

Each type applies the Mental Capacity Act 2005 but answers a different question. If your matter is a deputyship rather than a claim, the guide on what a COP3 form involves is the better starting point.

When is a capacity to litigate assessment needed?

You need a litigation capacity assessment whenever there is a genuine reason to doubt that a party can conduct proceedings. Warning signs include a brain injury, dementia, a learning disability, serious mental illness or instructions that keep shifting without explanation. The safest rule is to act early rather than wait for the court to raise it.

Solicitors often spot the first flags themselves. The client agrees to something on Monday and denies it by Friday. They cannot follow advice about risk, cost or settlement.

Waiting rarely helps. Under the Civil Procedure Rules, any step taken before a protected party has a litigation friend can be set aside. A late assessment can unravel months of hard work and expose the firm to criticism.

Family members raise concerns too, especially where an older relative faces civil or family proceedings. In those cases a calm, independent view protects everyone, including the client.

What legal test decides litigation capacity?

The leading authority is Masterman-Lister v Brutton & Co, later endorsed by the Supreme Court in Dunhill v Burgin. Together they set the standard that every litigation capacity assessment must apply. A person has capacity if they can understand, with proper explanation from their lawyers, the issues on which their decisions are likely to be needed.

Two points matter here and both trip people up.

First, capacity is decision-specific. A person may be able to run a straightforward claim yet lack the capacity to litigate a large compensation award. Under the Mental Capacity Act 2005, you assess the decision, not the person as a whole.

Second, capacity is never assumed from a label. Age, a diagnosis or a wheelchair tells you nothing on their own. Plenty of articulate clients lack real understanding, and plenty of quiet ones have full capacity. The law starts with a presumption of capacity, and the assessor works from evidence.

This is the contrarian truth many miss. A confident, well-spoken client can still fail the test, because fluency is not the same as understanding.

What happens during the assessment, and how long does it take?

A litigation capacity assessment usually follows a clear path. The assessor reviews the papers, meets the client, applies the legal test, and then produces a court-ready report. Most reports land within days of the interview, and urgent cases can move faster.

Here is the typical process.

1. Referral and papers. The solicitor sends the pleadings, medical records and background so the assessor understands the case.
2. The interview. The assessor meets the client, often at home or in a care setting, and explores understanding, memory and reasoning.
3. Analysis. The assessor weighs the evidence against the Masterman-Lister test.
4. The report. A structured written opinion sets out the findings and reasoning for the court.
5. Follow up. The assessor answers questions or attends court if the matter is contested.

Timing depends on urgency and complexity. A routine assessment might be booked within a week or two, while we regularly arrange urgent slots when a hearing looms. Our face-to-face or remote assessments give solicitors flexibility when a client cannot travel.

A short case shows how tight timing can get. A solicitor once needed an urgent view within ten days, with the report due before a hearing two weeks out. The client seemed articulate but could not retain the key issues or stay consistent. The assessor concluded the client lacked the capacity to litigate, gave verbal feedback the same week, and delivered the written report within two days.

Litigation friend and the Official Solicitor explained

When a person lacks litigation capacity, they become a protected party and must have a litigation friend to conduct the case for them. The litigation friend makes decisions in the person’s best interests and can be a family member, a deputy or, where no one else is suitable, the Official Solicitor. This is the safeguard that keeps proceedings fair.

The role is not a formality. A litigation friend must act genuinely for the protected party and have no conflict of interest. They file a certificate of suitability or are appointed by the court.

Where families cannot agree, or no willing person exists, the Official Solicitor may step in as litigation friend of last resort. We accept instructions from any of these routes, including the Official Solicitor.

Getting this right protects the case. Any settlement for a protected party also needs court approval, which is another reason the underlying assessment must be sound.

What does a litigation capacity assessment cost, and how do you choose an expert?

Costs vary with complexity, location and urgency. As a broad guide in 2026, private litigation capacity assessments in England and Wales often range from around £600 to £1,500, with complex neurological or urgent cases costing more. Many providers, including us, work on a fixed fee so there are no surprises. The main drivers of price are the depth of records to review, travel to the client, and whether court attendance is likely.

Price should never be the only factor. A cheap report that the court rejects costs far more in the long run.

When choosing an expert, look for genuine clinical background, real familiarity with the Mental Capacity Act 2005 and clear, defensible writing. Ask about turnaround, whether they will attend court, and how they handle communication needs. Read our litigation capacity case study to see how those qualities play out under pressure.

A multidisciplinary team adds real strength in complex medico-legal cases. Nurses, psychologists and mental health professionals each bring a different lens. Solicitors across regions rely on our mental capacity assessments across the Midlands and our capacity assessments in Greater Manchester for exactly this reason.

Common mistakes that weaken a case

The biggest mistake is assuming capacity from a diagnosis or from age. That single error has undermined countless files. A litigation capacity assessment protects against it by testing the actual decisions the case requires.

Here are the traps we see most often.

• Treating capacity as global rather than decision-specific.
• Leaving the assessment until the eve of a hearing.
• Sending an assessor to the client without the case papers.
• Ignoring communication needs, such as interpreters or memory aids.
• Confusing a general medical opinion with a proper capacity to litigate opinion.

Another quiet failure is thinking one report settles the matter forever. Capacity can fluctuate, so a view taken during a health crisis may not hold months later.

The fix is simple in principle. Instruct early, share full information, and choose an assessor who explains their reasoning clearly. Our Yorkshire capacity assessment team and wider network work this way as standard, and you can always get in touch with our team to talk a case through first.

Why do some litigation capacity reports get challenged in court?

Reports get challenged when they lean on a diagnosis, assess the wrong decision, or fail to show the assessor’s reasoning. A strong litigation capacity assessment connects the evidence to the legal test step by step. Courts want to see method, not just a conclusion, so a clearly reasoned report is far harder to attack.

Over the years, the same structural weaknesses keep surfacing. Spot them early and you protect the whole case.

• Concluding from a label: A dementia or brain injury diagnosis explains a doubt but never answers the legal question on its own.
• Assessing the wrong decision: The report must match the actual proceedings, not capacity in general.
• Skipping the support step: Assessors should record how they helped the person understand before deciding they could not.
• Gaps in the records reviewed: A difference between what was available and what the assessor actually considered is a classic line of attack.
• Reasoning you cannot follow: If a reader cannot trace how the evidence leads to the opinion, the opinion is vulnerable.

So what happens when a solicitor still feels uneasy after a report finds capacity? You can seek a second opinion, though the court usually has to approve a fresh litigation capacity assessment. That is slow and costly, which is exactly why a clear, well-evidenced first report matters so much.

The fix runs the other way too. A defensible report identifies the specific decisions, applies the Mental Capacity Act 2005 test to each, records the support offered, and explains its reasoning in plain terms. Our reports are written this way as standard, so they hold up under scrutiny, and you can always get in touch with our team before instructing to sense-check a tricky matter. For the underlying framework, it is worth reading the Mental Capacity Act 2005 directly.

Final thoughts

Think back to that solicitor in Nottingham, three weeks from a hearing, worried about a client who could not hold the thread of the case. A timely litigation capacity assessment turns that worry into clear evidence the court can act on. It protects the client, the case and the firm.

The key insight is worth repeating. Capacity is decision-specific, never assumed from age or diagnosis, and always judged against the case in front of you.

My honest prediction is that courts will keep tightening expectations around early, well-evidenced capacity work as the rules on civil proceedings develop. Firms that instruct sound assessors early will keep the advantage. At Gain Expert Assessments, this is precisely the problem we solve every week, and we are always glad to talk a tricky case through.

So here is the question worth sitting with. In your current caseload, is there a client whose capacity you have quietly assumed rather than genuinely checked?