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 there travels. This made Dermot a one-off companion of the Doctor. (NOTVALID: Dermot and the Doctor)

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