The Sun is a British tabloid newspaper, published by the News Group Newspapers division of News UK, itself a wholly owned subsidiary of Lachlan Murdoch's News Corp. It was founded as a broadsheet in 1964 as a successor to the Daily Herald, and became a tabloid in 1969 after it was purchased by its current owner. The Sun had the largest daily newspaper circulation in the United Kingdom, but was overtaken by freesheet rival Metro in March 2018.

The News of the World was a weekly national "red top" tabloid newspaper published every Sunday in the United Kingdom from 1843 to 2011. It was at one time the world's highest-selling English-language newspaper, and at closure still had one of the highest English-language circulations. It was originally established as a broadsheet by John Browne Bell, who identified crime, sensation and vice as the themes that would sell most copies. The Bells sold to Henry Lascelles Carr in 1891; in 1969, it was bought from the Carrs by Rupert Murdoch's media firm News Limited. Reorganised into News International, a subsidiary of News Corporation, the newspaper was transformed into a tabloid in 1984 and became the Sunday sister paper of The Sun.