Twins who were separated at birth and were unaware of each others existence and married each other, have had their marriage annulled, a peer told the House of Lords.
The twins were adopted as babies by different families and neither were not told they had a twin.
A High Court Family Division judge annulled the marriage after the couple discovered they were siblings, Lord Alton said. The judge ruled that the marriage had never validly existed. The identity of the twins and the details of how they met and eventually married was not disclosed.
The independant crossbench peer, who was informed of the case by a High Court judge involved, raised the case during a debate on the Human Fertility and Embryology Bill last month to highlight the need for adopted children to be given full access to their birth records.
Lord Alton said: The right of children to know the identity of their biological parents is a human right. There will be more cases like this if children are not given access to the truth. The needs of the child must always be paramount."
The Lords will vote on the revised bill on Tuesday.