Matt Roberts, who has worked with The Saturdays, Madonna and Naomi Campbell among many other famous names, has already helped the comedian lose two stone, according to the Daily Mail.
McIntyre previously revealed that he had been "cutting out carbohydrates and stopping drinking", as well as attending the gym every day as part of a strict fitness regime.
The Comedy Roadshow host said: "I'm one of those people where it all goes to my face. I swallow the food and it goes down, then it comes straight back up to my cheeks."
Roberts reportedly charges £150 an hour for his services, and currently works as Prime Minister David Cameron's personal trainer.