Kelvin Calder MacKenzie (born 22 October 1946, South London) is an English media executive and former newspaper editor. He is best known for being editor of The Sun newspaper between 1981 and 1994, an era in which the paper was established as Britain's best selling newspaper.

MacKenzie was educated at Alleyn's School. His parents were Ian and Mary Mackenzie, both journalists working for The South London Observer. When the South London Press took over their paper, Mary became Press Chief for the Tory leader of the Greater London Council, Sir Horace Cutler. Kelvin's father died in April 2004 at the age of 84. Kelvin MacKenzie left school with one O-level, in English literature. He joined the South East London Mercury at 17, and worked on local and then national newspapers, such as the Daily Express for the next ten years.

MacKenzie stated that he discovered early on in his career that he had little writing ability and that his talents lay in making up headlines and laying out pages. By 1978, at the age of 32, he was Managing Editor of the New York Post, two years after it was purchased by Rupert Murdoch, who already owned The Sun. Murdoch appointed him Sun editor in 1981 and is said to have described MacKenzie as his all-time "favourite editor".

Sir John Major, KG, CH, PC, ACIB (born 29 March 1943) is a British Conservative politician, who served as Prime Minister of the United Kingdom and Leader of the Conservative Party from 1990 to 1997. He held the posts of Foreign Secretary and Chancellor of the Exchequer in the Cabinet of Margaret Thatcher and was the Member of Parliament (MP) for Huntingdon from 1979 to 2001.

Despite Thatcher's "notorious" assertion that "she expected to continue in control as a backseat driver," Major's mild and consensual style was seen as complete contrast to Thatcher's forceful and confrontational manner. Early in his term, he presided over British participation in the First Gulf War (March 1991) and negotiated "Game, Set and Match for Britain" at the Maastricht Treaty (December 1991). Despite the British economy then being in recession he led the Conservatives to a fourth consecutive election victory, winning the most votes in British electoral history in the 1992 general election, albeit with a much reduced majority in the House of Commons. He is to date, the last Conservative leader to win an outright majority in a general election.