| Final | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 1 | Georgina Tallon | 19 | Potters Bar | 32.25 |
| 2 | 2 | Sophie Taylor | 17 | Co St Albans | 31.71 |
| 3 | 3 | Niamh James | 18 | Bishop Stort | 31.06 |
| 4 | 4 | Lily Merrett | 16 | Co St Albans | 30.66 |
| 5 | 5 | Lauren Stott | 17 | Hatfield | 30.97 |
| 6 | 6 | Isabel Harber | 16 | Verulam | 31.65 |
| 7 | 7 | Claire Burrell | 18 | Co St Albans | 31.86 |
| 8 | 8 | Libby Dunford | 16 | Hoddesdon | 32.30 |