The All England Open Badminton Championships, or simply All England, is one of the world's oldest and most prestigious badminton tournaments. Played annually, it developed after the success of the world's first badminton tournament held in Guildford in 1898. The tournament was successfully organised on April 4, 1899, however only three categories (Men's Doubles, Women's Doubles and Mixed Doubles) were originally staged. Both Men's and Women's Singles were added the following year. The first three tournaments were named "The Open English Championships". It was eventually considered (especially after the first Thomas Cup series in 1949) the unofficial world championship of the sport until 1977 when the International Badminton Federation launched its official championships. Since 1984 the tournament has been exclusively sponsored by Yonex.
Many female badminton players change their surname after marriage. Below are some of the former names or latest names as noted in the table above: ^1 Judy Devlin later known as Judy Hashman ^2 Tonny Ahm formerly known as Tonny Olsen ^3 Ethel B. Thomson formerly known as Larcombe ^4 Gillian Gilks formerly known as Gillian Perrin and the latest was changed to Gillian Goodwin ^5 Ulla Strand formerly known as Ulla Rasmussen ^6 Kitty McKane later known as Godfree ^7 Nora Perry formerly known as Nora Gardner