British actress Marian Diamond has died aged 89, her good friend friend and fellow actress Miriam Margoyles confirmed the sad news in an emotional tribute on social media today. Miriam, who played Professor Sprout in several of the Harry Potter movies, revealed that Marian had died at University College Hospital in London on Monday, January 5. Marian was 89. She enjoyed a successful acting career and had several roles in TV shows including Brookside, Jackanory, Doctors and many more. Looking