Seen by over 56 million people worldwide in 42 countries and in 21 languages, LES MISRABLES is undisputedly one of the worlds most popular musicals ever written. In October 2010 , the legendary musical LES MISRABLES will celebrate its 25th birthday by making theatrical history with an international first - three different productions in London at the same time. The Original Production at the Queens Theatre, the New 25th Anniversary Production at the Barbican, and A Celebratory Concert at The O2 on Sunday 3rd October, 2010.