The Black Sabbath bassist shared details of Osbourne’s final performance, including how “frail” he had become, in an essay for the Sunday Times. Butler said the iconic rocker needed the assistance of three people while rehearsing and had to sit down while he sang.

Insurers warned Ozzy Osbourne that they would not cover his Back To The Beginning concert if he stood to say goodbye to fans - but he was determined to be on his feet