What Evidence Do You Need for an Asylum Case? Top 5 Types

Five categories of evidence strengthen an asylum case regardless of the country of origin. It is designed for applicants and practitioners starting case preparation, and consolidates approaches drawn from UK, US, EU, and Canadian asylum jurisprudence. Strong cases combine multiple evidence types — none alone is decisive, but together they meet the standard of proof.[1]

The standard of proof in asylum cases is low — UK applies the Karanakaran "reasonable degree of likelihood" test; US applies "well-founded fear" requiring ~10% chance per INS v Cardoza-Fonseca. But the standard still must be met. The five evidence categories below are the most consistently decisive.

1. Witness Statement

Your own witness statement is the foundation of every case. It is the longest piece of evidence (typically 15-40 pages); it sets the structure decision-makers follow; everything else corroborates it. A strong witness statement contains the following elements.[2]

• Personal background — identity, family, location, education, work.
• Political/religious/ethnic context — your background and that of your community.
• Persecution events — chronological detailed account of each event.
• State protection attempts — denuncias, complaints, why protection failed.
• Internal relocation attempts — any efforts to move within the country and why they failed.
• Departure — how and why you left; route taken; why no claim elsewhere.
• Current fear — what would happen on return.
• Statement of truth — signed declaration.

The witness statement must be in your own words. Translated where necessary. Reviewed line by line with the applicant. Errors must be corrected before submission — discrepancies later destroy credibility.

2. Country Expert Report

The country expert report is the second decisive piece of evidence. It addresses two questions — what is happening in the country for the applicant's profile, and what would happen to this individual on return. Strong expert reports are 25-50 pages, cite authoritative country evidence (UN, governments, NGOs), apply that evidence to the specific applicant, and include the expert's declaration of duties to the court.[3]

UK rules — CPR Part 35 and Upper Tribunal Practice Direction. US — Federal Rules of Evidence. Canada — IRPR. Selection of expert matters; the expert should have specific country expertise (academic publications, fieldwork), relevant credentials, and tribunal experience. See our companion country expert reports article.

3. NGO and Community Attestation

Letters from NGOs, religious organisations, political parties, or community groups corroborate specific claims. They attest to documented activities, threats, or community membership. Strong attestation letters include the following elements.

• Letterhead — official organisation header.
• Signatory — named official with title, contact details.
• Verification basis — how the organisation knows the facts (records, member identification, documented contact).
• Specific facts — what happened, when, to whom.
• Date and signature.

Examples of strong attestation sources include the following.[4]

• Iran — Hengaw, KHRN, CHRI, IHR, 6Rang.
• Honduras — CDM, Cattrachas, OFRANEH, COPINH, C-Libre.
• Russia/Belarus — Memorial, OVD-Info, Viasna, ICRT.
• China — CHRD, NCHRD, Falun Dafa Information Center.
• Tajikistan/Central Asia — ADC Memorial, FIDH.

4. Medico-Legal Report

Where the applicant alleges torture, sexual violence, or detention abuse, an Istanbul Protocol-compliant medico-legal report is critical. The 2022 revised Istanbul Protocol sets the international standard. Key features include the following.[5]

• Clinical examination — physical findings, scars, injuries.
• Psychological assessment — PTSD, depression, trauma sequelae.
• Five-tier consistency scale — "not consistent" / "consistent with" / "highly consistent" / "typical of" / "diagnostic of".
• Author qualifications — Istanbul Protocol training; clinical credentials.
• Documentation of methodology — interview structure, examination process.

UK practitioners include Freedom from Torture, Helen Bamber Foundation, Medical Justice. US practitioners include HealthRight International, Physicians for Human Rights, individual experts on AILA panels.

5. Documentary and Digital Evidence

Original documents from the country of origin and digital evidence (social media, messaging apps) corroborate specific claims. Categories include the following.

• Identity documents — passport, national ID, birth certificate.
• Persecution documentation — court summonses, arrest records, detention papers.
• Political/religious affiliation — party cards, religious community records.
• Employment/educational documents — relevant where employer/institution targeted.
• Property documents — for land-related claims.
• WhatsApp/Telegram threats — screenshots with metadata.
• Social media posts — for sur place activity. See our social media evidence article.
• News articles — covering specific events.

Evidence Comparison Table

Meeting the Standard of Proof

UNHCR Handbook paragraph 196 establishes the "benefit of the doubt" principle — where the applicant's account is credible but unverifiable, the benefit of doubt should be given. Practical application:[6]

• Witness statement establishes the core account.
• Country expert report demonstrates plausibility.
• NGO attestation provides limited verification.
• Medico-legal report corroborates physical findings.
• Documents provide specific corroboration.

Where some evidence cannot be obtained safely (e.g. retrieving documents from Iran or Honduras might endanger family), the applicant explains why. Decision-makers should not penalise inability to provide evidence that would endanger the applicant or family.

Presenting Evidence

Strong evidence presentation matters. Key principles include the following.

• Indexed bundle — clear table of contents with page references.
• Logical organisation — by witness statement section, by evidence type, or by Convention ground.
• Translation — certified translations for non-English documents.
• Skeleton argument — explains how evidence supports legal arguments.
• Highlighted sections — key passages of long reports.

The strongest asylum case is not the one with the most documents — it is the one where the witness statement is corroborated across multiple independent sources. Five categories, layered together, demonstrate that the claim is consistent with documented country conditions and individualised facts.
UK practitioner consensus

Conclusion

The five asylum evidence types — witness statement, country expert report, NGO attestation, medico-legal report, documents and digital — form the architecture of strong asylum cases. Each plays a distinct role; together they meet the standard of proof. See our companion no documents article, country expert reports guide, and social media evidence article.