They can lay claim to being the world’s biggest boyband with millions of ardent fans spread around the globe, yet despite selling out huge venues overseas remain virtually unknown in Britain.

But now as one of the nation’s best kept musical secrets release their 25^th anniversary album, the angelic voices of Libera are hoping to finally become household names to rival the likes of Take That, Boyzone and One Direction this Christmas.

The south London-based choral choir are megastars in Japan…