| Mark Aldwinckle | 39.81 | 1996-09-07 | aged 10 | Bishops Stortford Open |
| Alex Lodge | 39.65 | 2000-04-02 | aged 10 | Speedo Junior League round 2 |
| Alex Lodge | 38.86 | 2000-04-02 | aged 10 | Speedo Junior League round 2 |
| Alex Lodge | 38.77 | 2000-05-20 | aged 10 | RTW Monson Gala |
| Alex Lodge | 38.19 | 2000-05-21 | aged 10 | Speedo Junior league Final |
| Alex Lodge | 37.84 | 2000-05-21 | aged 10 | Speedo Junior league Final |
| Alex Lodge | 37.44 | 2000-06-25 | aged 10 | Potters Bar Open |
| Jake Robinson | 36.72 | 2005-06-26 | aged 10 | Potters Bar Open |
| Liam Doonan | 36.62 | 2007-02-23 | aged 10 | Junior schools gala |
| Liam Doonan | 36.31 | 2007-03-18 | aged 10 | Age Groups Day 6 |
| Liam Doonan | 35.59 | 2007-03-24 | aged 10 | Herts Major League 3 |