Although a judge in a criminal trial was entitled, in circumstances where the prosecution or defence case was strong, to present the case to the jury as the strong case, it would not be right for a judge ever to give the impression that he favoured one side over the other. In the instant case, the offender's conviction was unsafe where the judge had allowed the jury to be left with the impression that he favoured the prosecution case.

[2005] EWCA Crim 2079