The Forensic Audit of Records: How to Properly Instruct a Single Joint Expert

In immigration and human rights litigation, the deployment of independent psychiatric evidence is often central to assessing the veracity of accounts and the potential for harm upon return. The use of a single joint expert (SJE) in these proceedings requires a rigorous approach to instruction to ensure that clinical findings provide meaningful assistance to the Tribunal, particularly when evaluating complex psychological sequelae of trauma or the impact of removal on vulnerable individuals.

The Procedural Framework for Expert Instruction

While the Civil Procedure Rules (CPR) Part 35 governs evidence in civil proceedings in England and Wales, immigration and asylum appeals before the First-tier and Upper Tribunals operate under the Tribunal Procedure Rules and relevant Practice Directions. The expert’s primary duty is to the Tribunal, maintaining independence regardless of which party provides instructions. A forensic psychiatric assessment may be directed by the Tribunal to assist with critical determinations, such as assessing the credibility of a claimant’s history or interpreting the significance of clinical findings within an asylum claim.

When parties agree or a judge directs that an SJE be appointed, the instruction process must be collaborative. The SJE is not an advocate for either side; rather, they are tasked with providing an impartial clinical opinion on matters such as the diagnostic validity of PTSD, the potential for complex PTSD (cPTSD) as defined in ICD-11, or the clinical implications of a claimant’s mental health for their ability to provide evidence at a hearing. Pursuant to the principles mirrored in CPR 35.8, instructions must be clear, balanced, and reflect the agreement of all parties.

Clinical Methodology and Evidence Integration

Forensic psychiatry in an immigration context requires more than a diagnostic label. It necessitates a nuanced application of the Istanbul Protocol, which provides a framework for assessing consistency between psychological findings and accounts of past ill-treatment. The expert should systematically address why certain clinical features, such as hyperarousal or avoidance, are consistent—or not—with a reported trauma history. This often involves a detailed cultural formulation to account for diverse presentations of distress that might otherwise be misidentified.

Instruction of an expert should be timed strategically, ideally well before the substantive interview or the hearing, to allow for a thorough review of medical records, including GP notes, detention centre clinical records (such as Rule 35 reports), and historical psychiatric correspondence. Failure to provide a comprehensive disclosure package risks the expert forming an opinion on an incomplete clinical picture, which can leave the report vulnerable to challenge during cross-examination.

Common Pitfalls in the Instruction Process

A frequent error in asylum casework is the failure to delineate the specific questions required for the Tribunal’s determination. Generic instructions often yield reports that lack sufficient analytical depth regarding the threshold for Article 3 ECHR claims or the application of legal frameworks relevant to the assessment of health. Practitioners should ensure that the SJE is explicitly asked to consider:

• Evidence of cognitive impairment or developmental factors relevant to an age assessment.
• Current clinical status regarding suicide and self-harm risk, and whether such risk is manageable within the proposed environment.
• The capacity of the claimant to provide reliable oral evidence, including their ability to cope with the potentially distressing nature of cross-examination.
• The presence of cPTSD, which may inform the Tribunal’s understanding of memory gaps or fragmented narratives.

Maintaining Forensic Independence

The instructing solicitor must respect the expert’s need to maintain clinical independence. While parties may pose written questions to an SJE to clarify aspects of a report, these should be proportionate and focused on the evidence rather than an attempt to steer the clinical conclusion. An expert who feels pressured to align with a specific party’s narrative risks compromising their duty to the Tribunal. When conflicting psychiatric evidence emerges between separately instructed experts, the Tribunal may direct a discussion between them to identify the issues on which they agree or disagree, and to reach a joint statement. This is a distinct procedure from the appointment of an SJE and should not be conflated.

Finally, the relevance of psychiatric evidence extends to whether a fresh claim under paragraph 353 of the Immigration Rules is substantiated. By providing a clear, evidence-based link between the psychiatric presentation and the potential for persecution or inhuman treatment, the report serves as a vital tool for the Tribunal in addressing the standard of proof applicable in international protection claims.

Related service: instructing an immigration psychiatrist. To instruct an expert, send us the case details and we will come back with the proposed expert’s CV, quotation and availability.