Original: Elizabeth became Queen of the United Kingdom, Canada, Australia, New Zealand, South Africa, Pakistan, and Ceylon upon the death of her father, George VI, on 6 February 1952.
Simplified: She became Queen when her father, King George VI, died on 6 February 1952. Changes to the Commonwealth When Elizabeth became Queen on 6 February 1952, she was officially Queen of the United Kingdom, Canada, Australia, New Zealand, South Africa, Pakistan and Ceylon (now called Sri Lanka).