Ozzy Osbourne is set to be honoured at this year's Brit Awards - with Robbie Williams fronting a super group paying tribute to the star. The ceremony, which is taking place in Manchester for the first time in its history, will see the Prince of Darkness receive the posthumous award for Lifetime Achievement. It comes seven months after the Black Sabbath frontman died aged 76. Now, to commemorate his outstanding contribution to music, the rocker who is known as the "godfather" of British heavy