By Seamus Duff Big Brother legend Imogen Thomas has shared her devastation over the fact her beloved mother has been diagnosed with a major health condition. The 41-year-old reality star \- who was a contestant on Big Brother in 2006 – had known about her mother’s Motor Neurone Disease diagnosis for six months. And on Thursday, she felt compelled to share the sad news after watching an episode of Coronation Street. Fans of the long-running ITV show will know that the character Paul Foreman, played by 38-year-old Peter Ash, has had his life shattered by a Motor Neurone Disease diagnosis of his …