Jones v National Coal Board

In an adversarial civil trial, a judge must preserve the balance between the parties. Judicial questions may clarify evidence, control the hearing and prevent irrelevance or repetition, but the judge must not assume the advocate's role or conduct the case as an investigation.

Intervention during cross-examination should be particularly infrequent. Repeated interruption can give a witness time to formulate answers and can prevent counsel from pursuing a proper line of inquiry. Where excessive intervention means that essential primary facts have not been fairly established and the appellate court cannot say that the result was inevitable, a new trial is required.

The widow of a miner killed by a fall of roof appealed from the trial judge's decision following her claim against the National Coal Board. She alleged failures in the measures taken after an earlier roof fall. The Board maintained that the precautions adopted were sufficient.

During the appeal, the widow complained that the trial judge's interruptions had prevented her counsel from properly presenting and testing the evidence. The Board was permitted to advance a cross-notice making a similar complaint. The central issue was whether the interventions had deprived the parties of a fair trial and whether the Court of Appeal could nevertheless uphold the result.

1. Appeal and cross-appeal allowed. Denning LJ delivered the judgment of the court. A new trial was ordered, with the costs of the appeal and below reserved to the judge at that trial.

2. The court held that the judge's interventions, viewed cumulatively, had gone far beyond what was proper. A judge in the English adversarial system determines the issues raised by the parties. The judge may ask questions needed to clarify an overlooked or obscure matter, regulate the hearing, exclude irrelevance and prevent repetition. The judge must not take over the examination of witnesses or appear to favour either side.

3. The court endorsed the principle illustrated by Yuill v Yuill, 61 TLR 176, that a judge who descends into the arena risks losing the detached perspective required for adjudication. It also relied on the established limits on judicially calling and examining witnesses, including In re Enoch & Zaretzky, Bock & Co, (1910) 1 KB 327.

4. Intervention during cross-examination requires special restraint. Cross-examination depends upon an unbroken sequence of question and answer and upon counsel's ability to pursue a planned line of inquiry. The judge's repeated interruptions, including interruptions before answers were given and interventions which favoured the defendants' evidence, could have prevented the plaintiff from obtaining helpful answers.

5. The court could draw inferences from primary facts properly found at trial, but it could not do so where the fairness of the trial left essential primary facts insecure. It could not say that the trial judge's conclusion was inevitable. The widow had advanced a substantial case on safety precautions which required a proper answer at a fair retrial.

6. The court declined to rule on the construction of section 49 of the Act of 1911 or the Support Rules. Any statutory breach would still require consideration of whether it was reasonably practicable to prevent it under section 102 (8), an issue closely allied to the common-law question whether every reasonable precaution had been taken.

• Court of Appeal: In [1957] EWCA Civ 3, the court allowed the widow's appeal and the Board's cross-appeal, and ordered a new trial because the original hearing had not been fair.
• First instance: The judgment identifies a trial before a judge, but gives no citation or fuller procedural details.