Rockers Pearl Jam infuriated bosses at a London concert venue after their Tuesday night gig over-ran - with frontman Eddie Vedder staging a sit-down protest as organizers attempted to force the band offstage.

The "Alive" hitmakers began their gig at the British capital's O2 Arena 15 minutes late and played right up until the venue's official curfew at 11:00pm.

But the rockers were having so much fun, they decided to keep going, much to the delight of the star-studded audience, which included actors Josh Brolin, Jonah Hill and Tim Robbins.

After concluding their third encore, singer Vedder told the crowd, "We usually finish after this song - but not tonight!"

The band kept playing for another 20 minutes until organizers turned on the houselights, signaling the end of the show.

The rockers said their goodbyes but Vedder sat down cross-legged in the middle of the stage clutching his microphone until his bandmates grabbed their instruments and joined him for one more tune.

The group is also facing a fine from O2 Arena bosses after Vedder was spotted sparking up cigarettes on stage, flouting the U.K.'s smoking ban. The regulations ban smoke from all public places, including concert venues, and offenders can face penalties of up to $4,000. .

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(This news article provided by World Entertainment News Network)