This Morning viewers have been left gobsmacked after learning Dermot O’Leary ’s real name. The former X Factor host, 51, made the shocking admission on Monday’s edition of the ITV programme, even surprising his co-host Cat Deeley.

On Tuesday's episode of This Morning, Dermot O'Leary revealed his real name—and it isn't Dermot. As the programme kicked off, Cat Deeley asked whether or not her ITV co-star had a middle name. He said: "My first name is Sean, Sean Dermot O'Leary." After a brief silence, taken aback, she replied: "Your first name is Sean? How did I not know that?"

Cat Deeley started Wednesday's episode of This Morning by making a surprise I'm a Celebrity confession, leaving co-star Dermot O'Leary stunned

Dermot O'Leary and Cat Deeley were back on our screens to host ITV's This Morning on Tuesday - but it wasn't long before he shared a surprising personal revelation

Dermot O'Leary and Cat Deeley were outside the studios today for a special food festival segment of This Morning, with Will Best joining them for the special event

Cat Deeley was back on the This Morning sofa today, but was forced to apologise to her co-star Dermot O'Leary as she made a demand about the rest of the programme

Dermot O'Leary and Cat Deeley presented This Morning today from a different location. They were holding a food festival alongside Will Best.