The Premier League is an English professional league for football clubs. At the top of the English football league system, it is the country’s primary football competition. It is contested by 20 clubs, operating a system of promotion and relegation with The Football League. The Premier League is a corporation in which the 20 member clubs act as shareholders. Seasons run from August to May, with teams playing 38 games each. It is sponsored by Barclays Bank, and is therefore officially known as the Barclays Premier League.

The competition formed as the FA Premier League on 20 February 1992 following the decision of clubs in the Football League First Division to break away from The Football League, which was originally founded in 1888, and take advantage of a lucrative television rights deal. The Premier League has since become the world’s most watched sporting league. It is the world’s most lucrative football league, with combined club revenues of around £1.4 billion in 2005–06, which are expected to rise to around £1.8 billion for 2007–08 due to media revenues. It is also ranked first in the UEFA rankings of leagues based on performances in European competitions over the last five-years, ahead of Spain’s La Liga and Italy’s Serie A.

The top four teams in the Premier League qualify for the UEFA Champions League, with the top two teams directly entering the group phase. The third and fourth placed teams enter the competition at the third qualifying round and must win a two-legged knockout tie in order to enter the group phase. However, this has changed as of the 2008–09 season, so that the top three teams enter the 2009–10 UEFA Champions League at the group stage, and the fourth-placed team enters the third qualifying round for non-champions. The fifth placed team automatically qualifies for the UEFA Europa League, and the sixth and seventh placed teams can also qualify, depending on what happens in the two domestic cup competitions.