ITV boss Dame Carolyn McCall was asked why she and Holy Willoughby were 'the only people' at the station not to hear about Phillip Schofield's affair at a parliamentary hearing on Wednesday.
Dame Carolyn faced the Culture, Media and Sport Committee after Phillip Schofield stepped down from ITV following his admission he had an "unwise" but "not illegal" affair with a young colleague.
The ITV boss wrote a letter to culture secretary Lucy Frazer, Culture, Media and Sport Committee chair Dame Caroline Dinenage and Ofcom's chief executive Dame Melanie Dawes, to confirm the broadcaster had asked a barrister to carry out an external review after the scandal broke.