With their “Watch the Throne” European tour wrapped up, Jay-Z and his Roc-La-Familia made their way to London for BBC Radio 1 Hackney Weekend 2012 on Saturday night. The first guest of Hov’s set? Rihanna, who joined her Roc Nation boss for “Run This Town.”

Watch Rihanna, Jay, and Kanye West rock the London festival crowd at Hackney below…..

via RapRadar