Swapped at birth: Why dad never looked like his parents

Matthew's dad had brown eyes and black hair. His grandparents had piercing blue eyes.

There was a running joke in his family that "dad looked nothing like his parents", the teacher from southern England says.

It turned out there was a very good reason for this.

Matthew's father had been swapped at birth in hospital nearly 80 years ago. He died late last year before learning the truth of his family history.

Matthew - not his real name - contacted the BBC after we reported on the case of Susan, who received compensation from an NHS trust after a home DNA test revealed she had been accidentally switched for another baby in the 1950s.