After topping the charts at Christmas (03) with his sombre cover of TEARS FOR FEARS' MAD WORLD, the American was expected to sing the track at next Tuesday's event - but organisers have destroyed his chance of performing in front of millions of viewers.
A Brits spokesman confirms, "Gary didn't get chosen."
And British tabloid The Sun claims Jules has been snubbed by Brits bosses because he's too boring.
"Those two will be one of the live acts of the year when they duet at the Brits. But Gary's just a bloke singing a gentle into the mic and the nation's now bored of him."