In Lewis v Denye, Parcq LJ stated: ‘In order to establish the defence of contributory negligence, the defendant must prove, first, that the claimant failed to take “ordinary care for himself” or, in other words, such care as a reasonable man would take for his own safety, and, second, that his failure to take care was a contributory cause of the accident.’ A plea of contributory negligence should be treated as setting up want of care by the claimant for their own safety, whether in the circumstances of the accident the claimant owed a duty to the defendant or not. See Commentary: Introduction: Bingham & Berrymans' Personal Injury and Motor Claims Cases [7.60]. The prerequisite for contributory negligence is causative fault on both sides. The court must apportion to fairly reflect respective responsibility. This can be subdivided into two parts: • the comparative blameworthiness of