Carl Roberts v Additional Magistrate for the District of Johannesburg; Attorney-General of the Witwatersrand

The appellant was convicted in a Johannesburg magistrate’s court of assault with intent to do grievous bodily harm and sentenced to a fine and suspended imprisonment. After conviction but before sentence, a series of irregularities occurred: the magistrate displayed hostility towards defence counsel, interrupted and curtailed the leading of medical evidence relevant to the credibility findings, refused applications to recall witnesses and to admit a police statement without hearing argument or giving reasons, privately discussed the case with the prosecutor in the absence of the defence, and refused a recusal application without argument or reasons. The defence alleged that these post‑conviction irregularities created an appearance of bias and undermined the fairness of the proceedings. On review, the High Court set aside only the sentence and remitted the matter for sentencing before another magistrate, holding that the conviction stood. The appellant appealed to the Supreme Court of Appeal, contending that the entire trial was vitiated.

The appeal succeeded. The conviction and sentence were set aside, and the proceedings were declared a nullity due to the appearance of judicial bias.

This case is a leading Supreme Court of Appeal authority on judicial recusal and the appearance of bias in South African law. It clarifies and refines the test for apparent bias, confirms that private communications between a presiding officer and a party are fundamentally irregular, and establishes that post‑conviction irregularities can vitiate an entire trial where credibility and fairness are affected. The judgment is frequently cited in recusal and fair‑trial jurisprudence.