ERIC Cowell completely stole the show on Britain’s Got Talent tonight with a surprise appearance on the panel.

Simon’s adorable son was thrilled to be taking his seat and told Amanda Holden that she would make a really good judge. When asked what Simon’s job was, Eric said nicely: “I’m daddy’s job now.”

He then walked down the aisles with Alesha Dixon, David Walliams and Amanda on their way to the panel.

Eric then sat on Simon’s lap and went to press the buzzer, but Simon quickly stopped him.