Simon Cowell's son's "hero" is the music mogul

Digital presenter Roman Kemp said: "Simon is a normal bloke and a really nice guy.

"He brings Eric here [to the set] all the time. He came in while Bruno Mars was here rehearsing and was dancing along.

"He loves Simon, you can just tell he thinks his dad is his hero."

Roman gets on well with all the 'X Factor' judges, which also includes Louis Walsh, Sharon Osbourne and Nicole Scherzinger, and says they are all very normal and grounded.

He said: "They are really down to earth.

"They all eat in the canteen with everyone and Simon always requests crisps, fruit pastilles and lemon and ginger tea...

"I was most surprised by the family feel at 'X Factor'. It's not scary, it's not bitchy, it's honestly lovely."

And the 23-year-old star - whose parents are Martin Kemp and Shirlie Holliman - is particularly close to Sharon Osbourne.

He said: "I have such respect for her. She is the mother of the team and has taken me under her wing.

"We had dinner together every night at judges' houses."

While the judges appreciate Roman's parents' past successes, 'Xtra Factor' host Rylan Clarke-Neal left Spandau Ballet star Martin unimpressed when he didn't realise who he was.

Roman told Closer magazine: "One of the best moments was when Rylan saw my dad and instead of being star-struck, he was just like, 'Oh my God, you're Roman Kemp's dad.' My dad was a bit p***ed off."