When was Margaret thatcher knighted?

Margaret Thatcher was not knighted; instead, she was made a Baroness and entered the House of Lords as Lady Thatcher in 1992. She served as the Prime Minister of the United Kingdom from 1979 to 1990 and was the first woman to hold this office. After her resignation, she was honored with a life peerage, which is a form of aristocratic title, rather than a knighthood.