The British Softball Federation (BSF) is the national governing body for softball in the United Kingdom.
The vast majority of UK softball is played in the co-ed (mixed) slowpitch format but there are numerous single-sex slowpitch teams and a growing fastpitch community.
There are many regional slowpitch leagues around the country whose teams affiliate annually to the BSF through their leagues. Single-sex or tournament teams must also affiliate in order to take part in BSF National Championship tournaments. Aside from National Championships, there are a multitude of local tournaments during the summer in different parts of the country.
Softball also has a wide-ranging Great Britain Softball National Teams programme, which includes men's and women's senior fastpitch teams, youth fastpitch teams for girls at Under-13, Under-16 and Under-19 age levels and boys at Under-19 level and a national co-ed slowpitch team that has won the European Co-ed Slowpitch Championship on eight straight occasions. The GB Men's Fastpitch Team is currently ranked third and Europe and eighth in the world and the GB Women's Fastpitch Team is ranked third in Europe and eleventh in the world.