What if, following the advice of her husband, Margaret Thatcher had stood down as Prime Minister of her own free will in the spring of 1989, on the tenth anniversary of her gaining power? This is, for a brief recap, before Lawson and Howe quit the Cabinet. John Major remains a relatively unknown Chief Secretary to the Treasury, other 1990s big beasts such as Ken Clarke, Norman Lamont and Michael Howard are still junior ministers.
What happens? Who stands in the ensuing leadership contest? Will Labour win the following election?