Moyles drafted as Big Breakfast guest presenter
The 27-year-old will front the programme alongside Richard Bacon this Friday whilst Amanda Byram is on holiday.
A spokeswoman for the Big Breakfast said: "The producers are very fond of him and he has been keen to do some TV presenting."
A Radio 1 spokesman said: "It's just a one-off. Radio 1 management are well aware he is doing the show."