The Big Six is an informal term used to describe a group of six clubs in the Premier League: Arsenal, Chelsea, Liverpool, Manchester City, Manchester United, and Tottenham Hotspur. These are the six clubs with the largest fan base sizes. They are also often recognized for their sustained success and financial strength in the competition. While not an official designation, clubs in this group have typically accounted for at least half of the total annual revenue generated by Premier League clubs since 2004.