High Quality Content by WIKIPEDIA articles! Jones v Kaney UKSC 13 is a 2011 decision of the Supreme Court of the United Kingdom on whether expert witnesses retained by a party in litigation can be sued for professional negligence, or whether they have the benefit of immunity from suit. The case involved a psychologist (Kaney) instructed as an expert witness in a personal injury claim, who was said to have negligently signed a statement of matters agreed with the expert instructed by the opposing side, in which she made a number of concessions that weakened the claim considerably. As a result, according to the injured claimant (Jones), he had to settle the claim for much less than he would have obtained had his expert not been careless. To succeed in the claim, he had to overturn an earlier Court of Appeal decision that had decided that preparation of a joint statement with the other side`s expert was covered by immunity from suit. Kaney therefore succeeded in getting the claim struck out before trial on an application heard by Mr Justice Blake in the High Court of Justice. The judge issued a certificate allowing the claimant to "leapfrog" the Court of Appeal and go straight to the Supreme Court to appeal against his decision.