Diddy huffed and puffed, and stormed out of a London club... after a drunken man tried to make a play for him.

He left the exclusive Maddox Club launch party after just 10 minutes, when a chubby toff tried to, ahem, get to know him better.

We watched as the horrified Diddy man spurned his advances - and ordered his minders to help him flee the building. As the amorous reveller attempted to grind against the hip-hop mogul, ladies' man Diddy yelled at his burly goons: "I'm ready to leave, right now!"

One guest reveals: "This guy was quite drunk and he'd already made passes at one of the barmen. But when Diddy walked in, the guy made it his mission to try and get in there with him."

But his assailant certainly had balls! Guest Henry Addo tells us: "The guy just went in for the kill, grabbing a vodka bottle off Diddy's table and lunging towards him. He looked like he was puckering up as he tried to grind against him - and Diddy wasn't amused. He couldn't flee the club fast enough."

And the king of bling was already feeling blue after being stood up by his new best pal, British beauty Sienna Miller. "It was a bad night all round for him," says our perfectly-placed partygoer.

"He was really excited when he came in but his mood soon changed when he was taken to his table at around 1am and there was no sign of Sienna. "He was asking people 'Where is she? What do you mean she's not here?' before taking a seat and sulking."

Labels: Diddy