# Social worker or doctor for a mental capacity assessment? | Nellie Supports Source: https://www.nelliesupports.com/guides/social-worker-versus-doctor-mental-capacity-assessments Canonical: https://www.nelliesupports.com/guides/social-worker-versus-doctor-mental-capacity-assessments Written by: Ben Slater Source review by: Kerry Slater Source review recorded: 2026-09-15 # Social worker or doctor for a mental capacity assessment? Choose an assessor for the specific decision, the person’s needs and any form or court requirements. Social workers and doctors can each provide relevant evidence within their competence. ## Author and Publication Author: Nellie Supports Ltd Publication Date: 15/05/2026 ​ ## Citation 39 Essex Chambers, Mental Capacity Guidance Note: Carrying out and recording capacity assessments. ## Copywright Copywright © 2026 Nellie Supports Ltd. All rights reserved. ​ This article is made available for general information, education and professional reference. It may be downloaded, printed and shared for non-commercial purposes, provided that it is reproduced in full, is not altered in any way, and is properly cited as the work of Nellie Supports Ltd. This material must not be edited, adapted, sold, republished, incorporated into commercial products, or used for commercial training, assessment, report-writing or advisory services without prior written permission from Nellie Supports Ltd. ​ This article does not constitute legal advice, clinical advice or a substitute for a decision-specific professional assessment. Where legislation, government guidance, court forms or external professional materials are referred to, those materials remain subject to their own copyright, licensing and re-use terms. ## About this guide Choose the assessor for the decision, the evidence required and any form or court requirements. ## What’s on this page - [Contact](https://www.nelliesupports.com/guides/social-worker-versus-doctor-mental-capacity-assessments) - [Overview](https://www.nelliesupports.com/guides/social-worker-versus-doctor-mental-capacity-assessments) - [Frequently Asked Questions](https://www.nelliesupports.com/guides/social-worker-versus-doctor-mental-capacity-assessments) - [Related Pages](https://www.nelliesupports.com/guides/social-worker-versus-doctor-mental-capacity-assessments) Choose the assessor for the decision, the evidence required and any form or court requirements. Social workers and doctors can both provide relevant capacity evidence within their competence. Diagnostic questions, communication needs and the purpose of the report may make one professional, or a combination, appropriate. ## Match expertise to the question A social worker may bring relevant experience of decision-making in daily life, social circumstances, care and the Mental Capacity Act. A doctor may be needed to investigate diagnosis, acute illness or other medical questions. Neither profession automatically produces stronger evidence: ask about the named practitioner’s experience, method and reasoning for this instruction. ## Check prescribed forms COP3 and PA14 have their own completion guidance and professional categories. Read the current form rather than assuming any person who assesses capacity can sign every certificate. A report that accompanies a prescribed form does not automatically replace it. Tell the provider which document the court, solicitor or other body requires. ## Keep will-making evidence distinct Ordinary testamentary capacity is assessed against the common-law Banks v Goodfellow test. The Golden Rule recommends the involvement of a medical practitioner in relevant circumstances; useful evidence from another competent professional is a different question from following that recommendation. Ask the will-drafting solicitor what evidence and execution arrangements are appropriate. ## Consider combined input where needed A person may need medical evidence about an acute or fluctuating condition and an assessment of their ability to make a specific decision with support. Clearly separate the questions and responsibilities. Do not treat a diagnosis as proof of incapacity or require an additional discipline where it adds no material evidence. ## Compare the practical arrangements Check professional registration, relevant experience, communication support, access to records, conflicts, report contents and follow-up. In England verify social workers through Social Work England and doctors through the GMC. For work in Wales check the applicable professional requirements. Ask how clinical uncertainty or missing evidence will be addressed. ## Agree a proportionate instruction Specify the decision, date, purpose, relevant documents, adjustments, required form, deadline and fee. Many everyday capacity decisions do not need a privately commissioned specialist report. Urgent clinical care should be addressed through the treating team, not delayed while arranging private evidence. ## Key takeaway Choose the assessor for the decision, the evidence required and any form or court requirements. Social workers and doctors can both provide relevant capacity evidence within their competence. Diagnostic questions, communication needs and the purpose of the report may make one professional, or a combination, appropriate. ## Frequently asked questions ### Can a social worker assess mental capacity? Yes, within their competence and the requirements of the particular task. Formal forms and specialist legal questions may have additional requirements. ### Does every assessment require a doctor? No. The appropriate assessor depends on the decision and evidence needed. Medical input is important where diagnosis or clinical assessment is required. ### Can a social-worker report satisfy the Golden Rule? A social worker may provide useful testamentary-capacity evidence within their competence, but that is distinct from following the Golden Rule’s recommendation for a medical practitioner’s involvement. Ask the will-drafting solicitor what examination, witnessing and recording arrangements are appropriate. Neither compliance nor non-compliance alone decides a will’s validity. ## Related mental capacity assessment pages The related pages below explain connected decisions, evidence requirements and legal processes. ### Mental Capacity Assessor ### Urgent mental capacity assessments for families ### What makes a mental capacity assessor suitably qualified? ### Read more ## Practical next steps Before seeking a report, write down the exact decision, relevant date, reason for concern and intended use. Gather the documents that explain the real options and any communication needs. Check any required form or court direction, agree the scope and total fee, and clarify how missing evidence or further questions will be handled. ## Primary sources and official guidance [Mental Capacity Act 2005](https://www.legislation.gov.uk/ukpga/2005/9/contents) [Mental Capacity Act Code of Practice](https://www.gov.uk/government/publications/mental-capacity-act-code-of-practice) ## Related information - [Mental Capacity Assessment to Revoke a Lasting Power of Attorney](https://www.nelliesupports.com/lasting-power-of-attorney-services/revoke-lpa) - [NHS Continuing Healthcare Support](https://www.nelliesupports.com/services/continuing-healthcare) - [CHC Appeal Application: Drafting and Submission](https://www.nelliesupports.com/services/continuing-healthcare/chc-appeal-application) --- Nellie Supports Ltd · 0333 987 5118 · nellie@nelliesupports.com Office 11 and 12, Unit 20, Springfield Business Park, Grantham, NG31 7FZ