American football in the United States the Fall Experimental Football League played two seasons in 2014 and 2015). Two professional football leagues are pending launch: the Alliance of American Football is scheduled to debut in February 2019, while the XFL, a revamp of a league of the same name that played one season in 2001, is set to return in February 2020. There are several professional indoor football leagues, played at basketball-sized arenas. The oldest one is the Arena Football League, which had several teams co-owned by several NFL owners but is officially independent from the NFL. Indoor football leagues play by significantly different rules that
American football in the United Kingdom may still be played at Wembley Stadium. The success of the International Series has led to speculation that London will be chosen as home of an NFL franchise in the future. Channel 4 were the first British channel to broadcast American football, in 1982. Coverage of the 1982 season involved broadcasting highlights of one game a week, and culminated in the first ever live broadcast of the Super Bowl in Britain, for which Channel 4 paid NBC £100,000. The sport became so popular in the mid-1980s that the Super Bowl regularly attracted more than 4 million viewers. Channel 4 ceased