Andrew Marr can today be revealed as one of the celebrities with a gagging order to hush up an extra-marital affair. The 51-year-old BBC broadcaster becomes the first public figure voluntarily to admit trying to conceal his infidelity. Mr Marr won a High Court injunction in January 2008 to suppress reports of a relationship with a fellow journalist five years earlier. At the time, he believed he had fathered a child with the woman. He also made maintenance payments -- until he discovered through a DNA test that he was not the girl's father.