Dermot O'Leary (in-universe)

Dermot O'Leary was the host of the National Television Awards 2011.

He overslept but the Eleventh Doctor took him back in time meeting many famous individuals on their travels. This made Dermot a one-off companion of the Doctor. (NOTVALID: Dermot and the Doctor)

He later met the Doctor again in a BBC studio. (NOTVALID: The Doctor Appears)