Piers Morgan has confirmed he left his job at Good Morning Britain because he chose not to apologise for saying he didn't believe Meghan Markle's claims during her Oprah Winfrey interview.The 55 year old, who was recently defended by pal Amanda Holden, took to his Instagram feed to speak out on his departure from the show as he shared a handwritten message to his 1.5million followers. "A little note to all my followers...," he started.