There have been numerous league formats since 1890. The British Baseball Federation (BBF) is the governing body for baseball in the UK and the baseball leagues. The season runs from April until August. Affiliated baseball clubs pay annual affiliation fees to be a member of the BBF and play in the BBF Leagues and Junior Leagues. There are three leagues independent of the British Baseball Federation: the Scottish National League, run by Baseball Scotland; the Northern Baseball League containing mainly teams based in Northern England; and the South West Baseball League, representing all but one of the teams in the South West of England. There is also a full Great Britain Baseball Programme which comprises the Great Britain Baseball Academy, junior national teams and Great Britain 'Seniors' Baseball Team. British national teams have competed in the European Baseball Championships and the World Baseball Classic.