‘The moment I knew I would never speak to Sharon Osbourne again after X Factor’

Tabby O’Callaghan was mentored by Sharon Osbourne on the first season of the X Factor (Picture: REX/Shutterstock)X Factor star Tabby O’Callaghan knew immediately it was going to be his final conversation withSharon Osbourne.The musician, now 43, reached third place on the first series of the ITV reality show in 2004 after being mentored by the Celebrity Big Brother star, 71.After the programme ended, Tabby told Metro.co.uk that Sharon had plans to take his music career to the next le