12 April 2012
Twins separated at birth and adopted by separate parents later married each other without realising they were brother and sister.
The pair were granted an annulment after a High Court judge ruled the marriage had never validly existed.
The identities of the British pair and details of the relationship and marriage have been kept secret.
But it is known that they were separated soon after birth.
They were never told they were twins.
They did not discover they were blood relatives until after the wedding.
The case was uncovered by Lord Alton in a conversation with a High Court judge.
He used it to highlight perceived deficiencies in the Human Embryology and Tissues Bill, currently going through Parliament.
