The Daily Mirror (informally The Mirror) is a British national daily tabloid newspaper which was founded in 1903. From 1985 to 1987, and from 1997 to 2002, the title on its masthead was simply The Mirror. It had an average daily circulation of 1,083,938 in March 2012. Its Sunday sister paper is the Sunday Mirror.
The Mirror has had a number of owners. It was founded by Alfred Harmsworth, who sold it to his brother Harold Harmsworth (from 1914 Lord Rothermere) in 1913. In 1963 a restructuring of the media interests of the Harmsworth family led to the Mirror becoming a part of International Publishing Corporation. The Mirror was owned by Robert Maxwell between 1984 and 1991. The paper went through a protracted period of crisis after his death before merging with the regional newspaper group Trinity in 1999 to form Trinity Mirror.