Louis Walsh has revealed that his X Factor co-judge Sharon Osbourne hands him secret notes to make him laugh during filming.

The 61-year-old judge tells TV Times that he’s thrilled Sharon’s returned for the new series of the ITV hit, which returns on Saturday.

“Sharon and I can’t stop laughing and she sends me notes when people are singing,” reveals Louis. “She writes down something and she’ll keep a really straight face and she’ll pass it over.

“And, of course, once I even see her writing I just start laughing. Sharon’s fun, feisty and not afraid. She gives her opinion, whether you like it or not. She doesn’t care. She’s making Gary laugh an awful lot. I’ve never seen him laugh so much.”