Simon Cowell has criticised talent shows that are a "bad copy" of The X Factor.
The TV and music mogul also said he is "puzzled" by BBC1's talent show The Voice.
In an interview for Radio 4's Today Programme, Cowell said: "I see a lot of shows trying to rip us off and you can't do that. If you try and rip somebody off it always looks like a bad copy."
Asked if he was talking about The Voice, which has been pitched against Britain's Got Talent in the schedules, he laughed and said:
He added that the show, which features Jessie J and Sir Tom Jones as coaches, was "the same as X Factor, they've got dancers behind them, they've got graphics, lights, same show".
Cowell also admitted he had worried about the future of his shows at one point when they failed to find credible acts.
He said that two or three years ago, with the exception of Leona Lewis, he was "getting nervous".
He said of this period:
Cowell also described himself as "lucky, hard-working and weird", saying: "I think this business does make you a little bit odd."