The top producer, who has worked with the likes of Usher, Rihanna, Justin Bieber, TLC and Mariah Carey, served on the programme's panel for the first two seasons from 2011, and tasted success when his protege Tate Stevens was crowned the winner of the 2012 run.

He subsequently stepped down from The X Factor to focus on his role as CEO of Epic Records, but now he admits he has few fond memories of his time on the series.

Speaking at the Midem breakfast event in Cannes, France on Saturday (06Jun15), Reid confessed, "It's the worst thing I've ever done.

"The first season, yes, I had a great time. It was a little bit of a vacation. I'd been making music, working at running labels for a long time, and it was a little bit of, 'Let me just have some fun.' But the second season I was fully engaged trying run a label, and it wasn't fun anymore."

Reid, who is planning to expand on the experience in a forthcoming book, continued, "And more importantly, it really affected my taste - it almost destroyed it. It completely threw me off... What works for television isn't necessarily the thing that works in the traditional journey of music, so I adjusted my taste for television. But the truth is, I lowered my bar - my bar was quite high, if I'm being honest, and as a result I didn't have the same level of success. The bar is quite high again now, but it was damaging.

"I worked with (show creator and fellow judge) Simon Cowell, who I love and have great respect for and he has great taste, but being around him for that long, I started to take on his taste, and I'm an amateur at having his taste - I'm good at my kind of taste."

America's The X Factor, based on the U.K. show of the same name, was scrapped after its third season.

Reid's comments emerge days after Carey shared similar feelings about her 2013 stint as a judge on rival show American Idol, which she branded "the worst experience of my life".