The plaintiff was injured in a charity bicycle ride when the defendant swerved and clipped his wheel.
The defendant pleaded volenti and contributory negligence, and served a jury notice.
At trial, the judge struck the jury notice, finding that the jury would be confused by the waiver signed by the participants and the volenti defence.
The trial judge found the defendant entirely liable.
The defendant appealed.
The Court of Appeal allowed the appeal and ordered a new trial, holding that the trial judge erred in principle by striking the jury notice.
The volenti defence is not a claim for declaratory relief, and a properly instructed jury could understand the limited legal effect of the waiver.