In Emeh v Kensington and Chelsea Health Authority [1985] QB 1012, the defendants negligently performed a sterilisation operation on the plaintiff who later fell pregnant and refused to have an abortion. She sued for the cost of bringing up her child. The defendants argued that her refusal to have an abortion broke the chain of causation. The court held that the plaintiff had not acted unreasonably and, therefore, her refusal did not break the chain.