When Digital Spy asked the Britain's Got Talent judge why viewers should switch over from Tom Jones and his spinning chair on The Voice to watch her reality series, the mother-of-two joked: "Because [Tom] will be spinning in his grave next week."
According to the Daily Star, Jones, 71, has dismissed the actress's remarks, claiming that he doesn't even know who she is.
"I had no idea who she was or what she did," the Welsh pop icon is quoted as saying.
The Voice and Got Talent have been battling for ratings and publicity since it was revealed that they would overlap in the Saturday night schedules.
The two shows will clash again this Saturday for 20 minutes, between 8pm and 8.20pm.
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Watch Amanda Holden talking to Digital Spy about Tom Jones and The Voice below: