An appeal against conviction for murder and a leading House of Lords case on the role of provocation. The appeal was on the ground that there was evidence which was relevant to the original defence of provocation. The Court of Appeal dismissed the appeal, but the House of Lords allowed the appeal and substituted a conviction for manslaughter. Lord Goff in his leading speech found that Morhall's addiction to glue sniffing should have been taken into account as affecting the gravity of the provocation, since the words of the deceased which were said to be provocative were directed specifically towards his addiction.