In 2002, the House of Lords ruled in "Fairchild v Glenhaven Funeral Services Ltd" that, where several parties had unlawfully exposed the claimant to asbestos and risk of pleural and peritoneal mesothelioma, all were liable for his injury, even though the claimant could not prove which individual party had provided the asbestos fibers that cause the disease. However, in "Barker v Corus (UK) plc" the House of Lords took "Fairchild" further and held that the parties who contributed to the risk were severally but not jointly liable. This meant that any single tortfeasor was liable to compensate the loss that the claimant suffered from mesothelioma only to the extent that that tortfeasor was itself responsible for the increase in risk. E.g. if the tortfeasor that the claimant chose to sue was found to have only contributed 20% of the total increase in risk, then the claimant was awarded damages at 20% of the total loss that he is reckoned to have suffered as a result of the mesothelioma. This meant that if the claimant wanted to be compensated for his full loss, he had to separately sue all tortfeasors.