Mental Capacity Assessment
Expert Witness Reports

Our chambers prepares CPR Part 35-compliant mental capacity assessment reports under the Mental Capacity Act 2005 for Court of Protection proceedings, personal injury claims, and family law matters. Our experts determine decision-specific capacity, complete COP3 forms, and provide reasoned opinions on functional ability.

01 Overview

Expert evidence for
MCA 2005 determinations.

Our chambers prepares mental capacity assessment reports for Court of Protection applications, deputyship orders, and contested capacity disputes. Our experts apply the functional test under the Mental Capacity Act 2005, addressing specific decisions such as residence, care arrangements, and financial management.

Reports comply with CPR Part 35, Practice Direction 35, and the MCA Code of Practice. Our members hold GMC Specialist Register or HCPC registration, ensuring adherence to the Civil Justice Council 2014 Guidance for the Instruction of Experts in Civil Claims.

Format CPR Part 35-compliant report
Typical length 15–40 pages
Discipline Psychiatry & Psychology
Turnaround 3–6 weeks from instruction
02 When Commissioned

Three stages where
capacity evidence is critical.

01

Court of Protection applications

Our chambers accepts instructions for deputyship applications under the Mental Capacity Act 2005. Reports address capacity to manage property, affairs, and welfare decisions, supporting COP3 form completion and compliance with Practice Direction 9E.

02

Personal injury claims

Where claimants lack capacity to manage damages or instruct solicitors, our experts assess capacity under the MCA 2005. Reports inform litigation friend appointments and quantum calculations, adhering to CPR Part 21 and the Masterman-Lister test.

03

Family proceedings

Our members prepare capacity assessments for family courts under FPR Part 25. Reports address parental capacity, consent to medical treatment, and residence disputes, ensuring compliance with Re C and the two-stage test.

03 Report Structure

What the report contains,
section by section.

01

Expert qualifications

GMC Specialist Register or HCPC registration, MRCPsych or BPS Chartered status, and medico-legal experience. Instructions received and documents reviewed are listed, complying with CPR 35.3 and Practice Direction 35.

02

Background history

Medical, psychiatric, and social history relevant to the decision in question. Pre-morbid functioning is established to inform the functional test under the MCA 2005 and Banks v Goodfellow.

03

Mental state examination

Clinical findings from the assessment, including cognitive screening where indicated. Observations on communication ability, insight, and executive function are documented to support capacity reasoning.

04

Functional test application

The two-stage test under the MCA 2005 is applied to the specific decision. The report addresses understanding, retention, weighing, and communication of information, referencing Re C and Masterman-Lister.

05

Opinion on capacity

Reasoned opinion on whether the individual has capacity for the decision in question. Where capacity is lacking, the report identifies the functional deficits and their causative factors.

06

Recommendations

Practical recommendations for supporting decision-making, including best interests considerations under the MCA 2005. Where relevant, the report addresses section 45a Mental Health Act interfaces.

07

Declaration of compliance

CPR Part 35 declaration, statement of truth, and acknowledgement of the expert’s overriding duty to the court. The report confirms independence and adherence to the Civil Justice Council 2014 Guidance.

04 Methodology

How the assessment
is conducted.

Our members conduct mental capacity assessments in accordance with the MCA 2005 Code of Practice and CPR Part 35. Each step is documented to ensure transparency and withstand judicial scrutiny.

  1. 01

    Records review

    Review of medical, psychiatric, social care, and legal records. Material entries are identified and referenced in the report to inform the functional test under the MCA 2005.

  2. 02

    Clinical interview

    Structured interview focusing on the specific decision. Communication is tailored to the individual’s cognitive ability, with breaks offered to minimise fatigue and distress.

  3. 03

    Cognitive screening

    Where clinically indicated, standardised tools such as the MoCA or ACE-III are administered. Results are integrated into the functional test reasoning.

  4. 04

    Two-stage test application

    The diagnostic threshold and functional test under the MCA 2005 are applied. The report addresses understanding, retention, weighing, and communication of information relevant to the decision.

  5. 05

    Best interests considerations

    Where capacity is lacking, the report identifies best interests factors under the MCA 2005. Recommendations address practical support and potential interfaces with section 45a Mental Health Act.

05 Where It Applies

Every legal context where
capacity is in dispute.

Our chambers accepts instructions for mental capacity assessments across civil, family, and criminal jurisdictions. Reports comply with the procedural rules governing each forum.

Court of Protection proceedings Deputyship applications Personal injury claims Litigation friend appointments Family law disputes Parental capacity assessments Medical treatment consent Financial management capacity Residence and care decisions Section 45a Mental Health Act Criminal fitness to plead
06 Key Considerations

Questions from
solicitors we work with.

Do your experts complete COP3 forms for Court of Protection applications?

Yes. Our members are experienced in completing COP3 forms for deputyship and welfare applications. The form is prepared alongside the full CPR Part 35-compliant report, ensuring consistency and compliance with Practice Direction 9E.

Can your experts assess capacity for individuals with dementia?

Yes. Our consultants regularly assess individuals with cognitive impairments, including dementia. Assessments are tailored to the individual’s communication ability, with findings grounded in the functional test under the MCA 2005.

How do your experts address section 45a Mental Health Act in capacity reports?

Where relevant. Our reports identify interfaces between the MCA 2005 and section 45a Mental Health Act, particularly in cases involving restricted patients. The assessment clarifies the legal framework governing the individual’s decision-making.

Are remote capacity assessments acceptable for Court of Protection proceedings?

Yes, where appropriate. Secure video assessments are accepted by the Court of Protection for straightforward capacity determinations. For complex cases or where communication is significantly impaired, we recommend in-person assessment.

Do your experts respond to Part 35 questions from the opposing party?

Yes. Our members respond to Part 35 questions under CPR 35.6, liaising with instructing solicitors to ensure responses are proportionate and comply with the Civil Justice Council 2014 Guidance.

What is the turnaround time for a mental capacity expert report?

3–6 weeks. Most instructions are allocated within 48 hours, with assessment offered within three weeks of records receipt. Urgent cases are prioritised, with expedited timetables agreed at intake.

Need an expert for your
mental capacity assessment case?

Send a brief case summary — decision in question, procedural stage, and any deadlines — and our chambers will confirm expert availability, scope, and timescales within one working day.