The ITV talent show judge, who is back on the panel with Simon, Amanda Holden and David Walliams, said she got frustrated waiting for a good act to audition and was more likely to press her buzzer early to vote off shoddy acts in this series.
She said: “I’m not as patient this year when it comes to finding talent, so rather than question my instincts on something I just go with it.
“The reality is that to find somebody amazing, you have to go through a lot of bad acts and you do get frustrated when you’re sitting there because you just want somebody amazing to come out.
“You do get annoyed so I press the buzzer. I love it, that’s part of it, the audience love it. Sometimes the audience are screaming at us, ‘Press the buzzer!’.”
Asked if her new attitude came of spending too much time with Simon, Alesha said: “I admire Simon’s technique and the way he judges. He’s very honest that’s why the public fell in love with him in the first place.
“He doesn’t mince his words and I think we could all learn some of that.”
Britain’s Got Talent, ITV, Saturday, April 12.