Evidence that confirms the accuracy of other evidence “in a material particular”. In general, English law does not normally require corroboration and any fact may be proved by a single item of credible evidence. A judge has a discretion to indicate to the jury the dangers of relying on particular evidence. Guidelines were laid down by the Court of Appeal in R v Makanjuola, R v Easton  3 All ER 730 (CA). Corroboration remains mandatory in cases of treason and perjury and for opinion evidence as to some matters, such as speeding, though other historical requirements have been abolished.