You name it, she's played it: the sublime classical actor Barbara Jefford
She has given unforgettable performances in Shakespeare, Chekhov and Shaw over her extraordinary 70-year career. Where's this great actor's damehood? The concept of the classical actor is fast disappearing. If anyone deserves the title, however, it is Barbara Jefford who will be 90 on Sunday. In the course of an extraordinary 70-year career, Jefford has done her fair share of TV and film: on the big screen she was in…