Simon Cowell has apologised for being so harsh on X Factor contestants Andrea Faustini and Lauren Platt.

The TV judge – dubbed Mr Nasty – was branded “Debbie Downer” by fellow panellists Mel B and Cheryl Fernandez-Versini after slating Andrea and Lauren’s performances on last week’s show.

Lauren Platt on the red carpet
Lauren Platt on the red carpet (PA)

But Simon has now told The Sun: “I had a bad night. I had a really bad headache, I was really grumpy.

“I want to apologise to Andrea and Lauren because I wasn’t being fair.”

Andrea Fastini at the Mobos
Andrea Faustini at the Mobos (PA)

Simon – who became a father to son Eric earlier this year – also shot down Cheryl’s recent comments that she will have to choose between being a judge on the show and starting a family with her new husband Jean-Bernard Fernandez-Versini next year.

Cheryl Fernandez-Versini
Cheryl Fernandez-Versini said she couldn’t be certain about returning to the show (PA)

Simon laughed: “Well I had one!”

But he insisted it was too soon to ask Cheryl to sign up for another series on the judging panel.