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Oral Evidence

Definition

Testimony given in court by a witness under oath or affirmation. The witness speaks directly to the facts within their personal knowledge. Expert witnesses give a specialised form of oral evidence that includes opinion, not just observation.

Given by
Witness under oath or affirmation
Legal setting
Testimony in court
Expert variant
Includes opinion, not just fact
Contrasted with
Documentary and real evidence

Common questions

How does expert oral evidence differ from a lay witness's oral evidence?+

A lay witness may only testify to what they personally perceived, such as what they saw or heard. An expert witness is permitted to give an opinion drawn from specialised knowledge, such as interpreting bloodstain patterns or DNA statistics, which a lay witness is barred from doing.

Why can oral evidence be less reliable than documentary or real evidence?+

Oral evidence depends on human memory, perception and recall under pressure, all of which are subject to distortion, suggestion and honest error, unlike a physical exhibit or a written record that does not change with time or stress. Courts weigh oral testimony against corroborating physical or documentary evidence for this reason.

Related terms

Chain of Custody
The documented chronological record of who collected, handled, transferred, and examined a piece of evidence. For digital evidence, chain of custody includes...
Circumstantial Evidence
Evidence that requires an inference to connect it to the fact in dispute. A forensic finding such as DNA concordance between a...
Documentary Evidence
Any document produced before a court to prove the truth of its contents. The category includes paper documents, electronic records, photographs, audio...
Primary Evidence
The best available form of a document, ordinarily the original itself. Under BSA 2023, electronic records certified under Section 63 are treated...
Real Evidence
A physical object produced for inspection by the court. Examples include weapons, seized drugs, biological samples, and fingerprint lifts. Real evidence requires...

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