| Carly Smith-Holmes | 1:50.31 | 1997-07-06 | aged 10 | Club championships |
| Charlotte Purcell | 1:45.42 | 1999-02-27 | aged 10 | Herts Age Groups 27/2/99 |
| Christie Bays | 1:40.71 | 2007-01-20 | aged 10 | Biggleswade Open |
| Christie Bays | 1:33.15 | 2007-05-26 | aged 10 | Stevenage Open |
| Samantha Perry | 1:29.93 | 2011-05-07 | aged 10 | Stevenage Open Day 1 |