McCracken (a protected party by his litigation friend) v Smith (Damian) and others [2015] EWCA Civ 380; [2015] WLR (D) 183
‘Where a claimant’s injury had two separate causes, one of which was his own criminal conduct in a joint enterprise with another, amounting to turpitude for the purposes of the defence of ex turpi causa, and one of which was a third party’s negligence, the relationship between the claimant’s turpitude and his negligence claim against the third party was not such as to debar his claim against the defendant in reliance on the principle of ex turpi causa. The correct approach of the court in such cases was to give effect to both causes of the injury by allowing the claimant to claim in negligence against the third party but, if negligence was established, by reducing any recoverable damages in accordance with the principles of contributory negligence so as to reflect the claimant’s own fault and responsibility for the injury.’
WLR Daily, 22nd April 2015
Source: www.iclr.co.uk