Prolific writer who produced more than 40 plays, as well as books of essays, poetry and short stories was a key British figure in 20th century dramaSir Arnold Wesker, one of the key British figures of 20th century drama and a writer whose work spanned more than five decades, has died. A prolific, often highly political, writer who produced more than 40 plays, as well as books of essays, poetry and short stories, his …