| Jeanette Clark | 1:32.42 | 1996-03-03 | aged 12 | Age Groups |
| Jade Clark | 1:24.66 | 1997-10-04 | aged 14 | St Albans trophy meet |
| Leah Reeves | 1:23.99 | 1998-03-08 | aged 11 | unknown fixture |
| Claire Taylor | 1:22.61 | 1998-03-08 | aged 11 | unknown fixture |
| Leah Reeves | 1:20.73 | 1998-05-10 | aged 12 | unknown fixture |
| Claire Taylor | 1:17.99 | 1998-11-29 | aged 12 | Hitchin Open |
| Leah Reeves | 1:16.41 | 1999-04-10 | aged 12 | Herts Age Groups 10/4/99 |
| Leah Reeves | 1:16.24 | 1999-04-10 | aged 12 | Herts Age Groups 10/4/99 |
| Claire Taylor | 1:15.99 | 1999-06-20 | aged 12 | Club Championships round 1 |
| Claire Taylor | 1:15.39 | 1999-10-09 | aged 13 | Speedo League Round 1 |
| Claire Taylor | 1:14.16 | 1999-11-27 | aged 13 | Hitchin Open |
| Claire Taylor | 1:12.01 | 2000-04-08 | aged 13 | Herts Age Groups session 7 |