Who played Mr tom in goodnight Mr tom?

Mr Tom, William, Zach, George, Carrie and Ginnie, Mrs Annie Hartridge, Lucy, Will's mother, Glad, Trudy, Mr Hartridge, Sammy, Elizabeth Thatcher, Dr Stelton, Mrs Little, Dr Little, Rachel, Matthew Parfitt, May Thorne, Miss Black, Patsy, Ruth, Mr Peters, and many many more! just ask another question.