Elisabeth Sladen (1st February 1948, Liverpool, England - 19th April 2011)
She was one of the most popular companions of all-time, and one of my favorites. Her long-time co-star Tom Baker expressed what a lot of us are feeling.
She can't be dead. But she is: she died yesterday morning. Cancer. I had no idea she was ill; she was so private, never wanted any fuss, and now, gone. A terrible blow to her friends and a shattering blow for all those fans of the programme whose lives were touched every Saturday evening by her lovely heroic character, Sarah-Jane Smith.
It sad that she's gone, but she'll always live on in the hearts of her fans.