He took on the principal role of toreador Escamillo in the production, for a one-off performance which marked the first ever opera at the venue at the time.
In 2011, speaking about reprising the role of Chicago’s scheming lawyer Flynn, he said he had based his portrayal of the character on his old mentor and Pop Idol judge, Simon Cowell.
Campbell starred opposite Ugly Betty star America Ferrera in the musical set in prohibition-era Chicago, and said: “He’s the consummate businessman and a wonderful guy and there’s a lot of Simon Cowell in Billy Flynn in terms of the way he approaches things and I recognise that in terms of the character.”
He credited Cowell with persuading him to take on the role in Chicago in the first place.
He said: “I’m incredibly grateful for the experiences I’ve had and all the opportunities that it opened up and to be able to call Simon Cowell a friend and to be able to have dinner with him.”