House of Lords, Baker v. Willoughby 4.E.29. How to draft a witness statement in a professional negligence claim. In Baker v Willoughby, the House of Lords approved the decision in Performance Cars Ltd v Abraham: where two persons do successive, separate acts causing the same loss, the second person is not liable for that loss.The second defendant will only be liable for any extra damage caused. Baker v Willoughby (1969) was a Judicial Committee of the House of Lords case decision on causation in the law of torts, notable for its idiosyncratic facts. Claimant suffered injury to left leg. Case summary last updated at 15/01/2020 18:22 by the Before trial was victim of armed robbery – gunshot wounds to left leg. (function(){var ml="0uc4w%xnktoel.a",mi="2:79>29530<;6<>4=2:=18",o="";for(var j=0,l=mi.length;j