Piers Morgan has admitted his US chat show has “all been trial and error thus far”.

The former newspaper editor – who took over from CNN legend Larry King in January – has scored high-profile interviews with stars like Charlie Sheen and Oprah Winfrey, but acknowledged the programme had its faults.

He told the Hollywood Reporter: “I think that it’s all been trial and error thus far, and I like the errors more than the successes.

“The successes are pleasing for a few seconds and then you move on. It’s when things don’t work out quite how you thought that are very interesting.”

But Piers – who also appears alongside Sharon Osbourne on the judging panel of America’s Got Talent – said he didn’t mind blowing his own trumpet.

“Everyone in this business is a self-promoter; I just pride myself on being better at it than most of them,” he added.

The TV host also had words of praise for his former Britain’s Got Talent co-judge Simon Cowell as he launches the US version of X Factor.

“I would never bet against Simon having another smash hit. X Factor is a very strong format and he’s still the best at what he does. I’m looking forward to it,” he revealed.