Writer and poker champion Victoria Coren is to marry comedian and writer David Mitchell.

Ms Coren, 38, announced the engagement in The Times's social and personal pages. The daughter of humorist Alan Coren and an a esthetist Anne Kasriel, she is also the sister of Giles Coren, a columnist for The Times.

In 2006, she won the main event on the European Poker Tour, pocketing £500,000. She has a first-class degree from Oxford University and regularly contributes to the Observer and the BBC.

Mr Mitchell, best known as half of the duo Mitchell and Webb, was first rumoured to be involved with Ms Coren by the Telegraph's Mandrake column last March. But the couple have largely kept their relationship a secret until now.